James v. Contra Costa County
- Susan Illston
- 3:22-cv-05939
- U.S. District Court · Northern District of California
- 3
In Carrie James v. Contra Costa County, Judge Susan Illston denied plaintiffs’ motion to amend their complaint to re-add a county-liability claim.
The plaintiffs’ attempt to re-add the Monell claim was rejected, and the defendants avoided reopening factual discovery or changing the pretrial schedule.
What happened
In Carrie James v. Contra Costa County, the plaintiffs asked to amend their complaint to re-add a claim that Contra Costa County had policies or practices responsible for attacks between inmates. They relied on testimony from a March 2022 criminal preliminary hearing about earlier attacks and fights at the Martinez Detention Facility.
The defendants argued that the plaintiffs waited too long, that amendment would prejudice them because fact discovery had closed, and that the proposed claim would not succeed. The plaintiffs had not explained why they waited to investigate the claim, and the court found that the transcript they described as newly discovered had been publicly available.
Judge Susan Illston denied the motion. She concluded that allowing the amendment would cause delay and prejudice, and that the proposed claim was futile because the new information did not add facts about deficient training, inadequate policies, or a policy of inaction.
The detailed version
- James v. Contra Costa County · No. 3:22-cv-05939
- Susan Illston
- Dec. 30, 2025
Background
Plaintiffs moved to amend their complaint to re-add a claim under Monell v. Department of Social Services. The proposed claim alleged that the County failed to train and supervise deputies regarding attacks between inmates, maintained inadequate procedures to prevent such attacks, and maintained a policy of inaction concerning them.
Plaintiffs said they had obtained newly discovered evidence on November 17, 2024. The evidence consisted of testimony by Contra Costa deputies during a March 2022 criminal preliminary hearing involving the two inmates who attacked the decedent. The testimony concerned other attacks by those inmates before the attack on the decedent and the general prevalence of fights between inmates at the Martinez Detention Facility.
The court had dismissed the Monell claim without prejudice in September 2023. Defendants opposed the amendment, arguing undue delay, prejudice, and futility. They stated that plaintiffs did not conduct discovery aimed at supporting a Monell claim until October 2025 and that the transcript had always been publicly available. Fact discovery closed on November 21, 2025.
Legal standard
Under Federal Rule of Civil Procedure 15(a)(2), courts generally should freely allow amendments to pleadings unless the amendment would prejudice the opposing party, was sought in bad faith, caused undue delay, or would add a futile claim. The opposing party bears the burden of showing why amendment should not be allowed.
Court’s reasoning
The court found that defendants met that burden. Plaintiffs did not explain why they waited until October 2025 to conduct discovery supporting the Monell claim or why they did not obtain the publicly available transcript earlier. Because discovery had closed, allowing the amendment would prejudice defendants by requiring the court to reopen factual discovery and change the pretrial schedule. The court was not inclined to do so given the advanced age of the consolidated cases.
The court also found the proposed amendment futile. When it dismissed the earlier Monell claim, it had already considered allegations that the two inmates had attacked others before attacking the decedent and that the County had failed to train deputies about preventing or responding to inmate-on-inmate attacks. The new evidence supplied somewhat more detail about the prevalence and timing of those attacks, but it did not provide additional factual support for claims based on failure to train, a policy of inaction, or inadequate procedures.
In particular, the proposed amended complaint did not allege facts about the County’s training program or explain how it was deficient. It also did not describe the substance of the allegedly inadequate policies and procedures. The court stated that it could not infer deficient training or inadequate policies merely from allegations that inmate-on-inmate attacks were common at the facility.
Disposition
The court vacated the scheduled January 9, 2026 hearing because it found the matter suitable for decision without oral argument. Judge Susan Illston denied plaintiffs’ motion to amend the complaint.
Read the full 3-page opinion on CourtListener, the free public archive maintained by the Free Law Project.