Shannon v. Donnelly

CourtDistrict Court, N.D. Illinois
DecidedJuly 31, 2025
Docket1:24-cv-12078
StatusUnknown

This text of Shannon v. Donnelly (Shannon v. Donnelly) is published on Counsel Stack Legal Research, covering District Court, N.D. Illinois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Shannon v. Donnelly, (N.D. Ill. 2025).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION

MASON SHANNON, ) ) No. 24-cv-12078 Plaintiff, ) v. ) Judge Jeffrey I. Cummings ) KAREN DONNELLY, ) GEORGE MUELLER, GREGORY ) STICKA, et. al., ) ) Defendants. )

MEMORANDUM OPINION AND ORDER Plaintiff Mason Shannon filed this lawsuit against the County of LaSalle, certain prosecutors at the LaSalle County State’s Attorney’s Office (namely, Karen Donnelly, George Muller, and Gregory Sticka) (the “Prosecutors), and certain law enforcement officers at the LaSalle County Sheriff’s Office (namely, William Norman, Josh McGrath, Adam Diss, Thomas Pocivasek) (the “Officers”). Plaintiff alleges defendants violated his constitutional rights by unlawfully detaining him and fabricating evidence to implicate him in the death of Michael Castelli, who died following the attempt by plaintiff and his co-workers to restrain him after Castelli took psychedelic mushrooms and became violent. In plaintiff’s complaint (“Complaint”), he brings claims under 42 U.S.C. §1983 for violations of the Fourth and Fourteenth Amendments, conspiracy, and failure to intervene, as well as several state law claims. He also brings a claim under Monell v. Dep’t of Soc. Servs. of City of New York, 436 U.S. 658 (1978), against the County. The defendants filed three separate motions to dismiss asserting that Shannon’s claims should be dismissed pursuant to Federal Rules 8, 10, and 12(b)(6), (Dckt. ##18, 20, 22). Among other things, defendants assert that Shannon’s unlawful detention claim is time-barred and that he has failed to allege a due process claim for fabrication of evidence. The facts as alleged show that Shannon went through a number of traumatic experiences after Castelli’s death. Nonetheless, for the reasons that follow, the Court agrees that Shannon’s claims should be dismissed. I. LEGAL STANDARD

To survive a Rule 12(b)(6) motion to dismiss, a complaint must “state a claim to relief that is plausible on its face.” Bell. Atl. Corp. v. Twombly, 550 U.S. 544, 570 (2007). A claim is plausible when the plaintiff “pleads factual content that allows the court to draw the reasonable inference that the defendant is liable for the misconduct alleged” and the complaint must “permit the court to infer more than the mere possibility of misconduct.” Ashcroft v. Iqbal, 556 U.S. 662, 678, 679 (2009). When considering a motion to dismiss under Rule 12(b)(6), the Court construes “the complaint in the light most favorable to the [non-moving party] accepting as true all well-pleaded facts and drawing reasonable inferences in [the non-moving party’s] favor.” Yeftich v. Navistar, Inc., 722 F.3d 911, 915 (7th Cir. 2013). Nonetheless, courts are permitted to

consider “any facts set forth in the complaint that undermine the plaintiff’s claim.” Bogie v. Rosenberg, 705 F.3d 603, 609 (7th Cir. 2013) (cleaned up). II. BACKGROUND The facts below are drawn from the allegations in the Complaint, (Dckt. #1). A. Michael Castelli’s Death On July 20, 2017, Michael Castelli (“Castelli”) asked Mason Shannon (“Shannon” or “plaintiff”) to pick him up at bar where he was drinking, and they thereafter drove to Shannon’s trailer at Bonnie Plants (Shannon’s workplace), and watched YouTube videos about skydiving. (Id. ¶¶26–27). While together in the trailer, Castelli consumed more alcohol and also smoked cannabis. (Id. ¶¶7, 29–30). At around 11:00 p.m., Shannon and Castelli left to investigate a light that was on in one of the property’s greenhouses. (Id. ¶28). Shannon’s co-workers Joseph Brewer (“Brewer”) and Jordan Wilkinson (“Wilkinson”) were there unloading and storing pallets. (Id. ¶32). At this

time, Shannon noticed that Castelli began to act strange and told him that he would drive him back to town. (Id. ¶33). Before he could do so, Castelli disappeared and “[u]nbeknownst to Shannon, at some point that evening Castelli had ingested psychedelic mushrooms.” (Id. ¶¶35– 36). When Shannon finally located Castelli, at least thirteen minutes later, he was “delirious and violent.” (Id. ¶38). Castelli physically attacked and choked Shannon and punched Wilkinson on the side of his head. (Id. ¶39). Shannon and Brewer attempted to restrain Castelli and Wilkinson, called the police, and ran to get the Bonnie Plant supervisor, James Clouse (“Clouse”), who then joined in the efforts to subdue Castelli. (Id. ¶¶40–42). After calling the police again, the operator told Wilkinson that the men should try and

“hold Castelli until an officer arrives,” (id. ¶43), and the men then zip-tied Castelli’s wrists, which he thereafter broke out of, (id. ¶¶43–45). Brewer initially held Castelli in a neck restraint, and then Shannon took over while Brewer attempted to hold Castelli’s legs. (Id. ¶¶47–48). Shortly after Shannon placed Castelli in a neck restraint, LaSalle County Deputy William Norman (“Norman”) arrived and handcuffed Castelli. (Id. ¶49). Castelli became unresponsive shortly after being handcuffed and CPR efforts were unsuccessful. (Id. ¶¶50–51). Castelli was pronounced dead at the hospital. (Id. ¶53). B. The LaSalle County Sheriff’s Office and LaSalle County State’s Attorney’s Office Investigation

Detective Thomas Pocivasek was assigned to investigate the matter and Shannon, Brewer, Wilkinson, and Clouse each wrote a one-page summary regarding the events that transpired. (Id. ¶¶54–55). Wilkinson went to the police station to provide a videotaped statement, but the other three (Shannon, Brewer, and Clouse) requested an attorney. (Id. ¶56). According to Shannon, once they asked for an attorney, “the investigation took an ugly turn” and law enforcement “assumed that Shannon must have committed a crime.” (Id. ¶57). Dr. Valerie Arangelovich (“Dr. Arangelovich”) autopsied Castelli and signed a September 7, 2017 report finding that Castelli “died of asphyxia due to a physical altercation.” (Id. ¶¶59– 60). Five days later, after an unrecorded phone call with the prosecutors, Dr. Arangelovich concluded that Castelli was choked to death. (Id. ¶¶61–62). On September 8, 2017, prosecutors charged Shannon and Brewer with involuntary manslaughter. (Id. ¶¶63–64). A police technician went to examine Castelli’s body several hours after he was pronounced dead and noticed two drops of semen on or near his penis. (Id. ¶¶86, 88). According to the Complaint, the drops were bodily secretions that happened over time while Castelli lay on a gurney in the hospital. (Id. ¶89). The drops of semen were used to establish probable cause for a warrant to collect biological samples from Shannon’s body, along with the fact that Shannon and Castelli were spending time together in Shannon’s trailer. (Id. ¶¶89, 92). The warrant affidavit represented that semen was “dripping” from Castelli’s penis,

and did not mention that the semen was observed several hours post-mortem. (Id. ¶¶86–92). The affidavit also did not mention that Castelli and Shannon were fully clothed on the night of Castelli’s death. (Id. ¶94). Shannon was back at the LaSalle County Sherrif’s Department, “locked in a cold interview room” when a police technician entered to execute the search warrant and “forced him to provide evidence as if he had raped Castelli.” (Id. ¶¶58, 95). Shannon was ordered to “pull out tufts of his own pubic hair,” collect samples with a cotton swab, and allow photographs to be taken of his genitals. (Id. ¶¶96–99). The technician drafted a report that referred to Shannon as

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Shannon v. Donnelly, Counsel Stack Legal Research, https://law.counselstack.com/opinion/shannon-v-donnelly-ilnd-2025.