The long-building case against Andrew Coleman, 34, finally landed in front of a jury yesterday, as opening statements began in the killing of his girlfriend, 37-year-old Kirsten Castle, and her unborn child. Castle and the fetus were found dead in the couple’s San Mateo home in August 2024, shifting the case from a quiet investigation to a full-blown trial watched closely in the community. Prosecutors sketched out their theory of what happened inside that house, while defense attorneys urged jurors to hold off on judgment until they have heard every witness and seen every piece of evidence.
Police and arrest
According to San Mateo police, family members found Castle unresponsive at a Hayward Park residence on Aug. 4, 2024. Investigators quickly zeroed in on Coleman and tracked him to Southern California, where he was arrested that same night. Officers also recovered a safe they believe was taken from the home that contained cash and the children’s passports, as reported by KTVU.
Prosecutors outline the case
In their opening remarks, prosecutors told jurors that conditions at the scene were consistent with asphyxiation or strangulation and said the unborn child, they noted, would have been named Indigo. Prosecutor Ryan McLaughlin described what he said was a pattern of near-daily fights between the couple and alleged Coleman became physically aggressive in the hours leading up to Castle’s death, including throwing a purse and punching the window of her Tesla, according to the San Mateo Daily Journal.
Defense and witnesses
Defense attorney McDougall pushed back on the prosecution’s narrative, arguing this was not a planned killing and saying Coleman had regularly checked on Castle during the pregnancy and gone with her to medical appointments. He warned jurors against drawing quick conclusions, telling the court, “He absolutely did not know Kirsten and Indigo had died,” describing his client’s state of mind at the time, according to the San Mateo Daily Journal. An uncle who took the stand testified that Coleman called him on Aug. 4, claiming police were trying to kill him and asking for help to leave town. The uncle told jurors he believed Coleman was on drugs or otherwise not well.
Legal stakes
Coleman faces two counts of murder with special-circumstance allegations that could significantly increase his sentencing exposure under California law. Those factors and the potential penalties were detailed earlier when charges were first filed, as reported by KTVU.
What comes next
The case now moves into the evidentiary phase, where jurors will hear from witnesses and weigh forensic evidence that is expected to be both technical and emotionally grueling. Both sides have warned the court that the testimony will be difficult to sit through. The county coroner and other investigative witnesses are expected to be called as the trial continues.
