A California mom allegedly murdered her two-year-old son and tried to make his death look like an accidental drowning.

Melissa Lynn Beisel, 41, faces a maximum sentence of 25 years to life if convicted after she was arrested in connection with the death of her son on June 4, according to the Orange County District Attorney’s Office.

Police responded to Beisel’s home in Placentia to find her in the shower “with the water running with the body of her two-year-old son, Aidan,” on September 22, 2025, prosecutors said.

The child was taken to the hospital, where he was pronounced dead. Beisel was also taken to the hospital with “superficial stab wounds to her neck and arms.”

Investigators said she had been bathing her son in a plastic storage bin inside a walk-in shower when she stepped away to grab soap — and returned to find him face down in the bin, according to the Placentia Police Department.

“The mother began CPR, and when she determined that her CPR was ineffective, the mother harmed herself with a sharp object,” police said.

Police said Beisel “stayed in the bathroom with the child for approximately 6 hours” before the child’s father found them and called 911.

At the time, four other children — all in their early to mid-teens — also lived in the home, the Orange County Register reported.

Beisel was initially taken into custody following her discharge from the hospital on charges of involuntary manslaughter and child abuse causing great bodily injury.

The toddler’s death was initially investigated as a drowning.

However, the District Attorney’s Office said a subsequent investigation “ruled out drowning as the cause of death for the otherwise healthy two-year-old and determined the manner of death to be homicide.”

Beisel had relocated to Coarsegold in Madera County after her son’s death, but investigators tracked her down and re-arrested her for his murder on June 4.

Orange County District Attorney Todd Spitzer condemned the killing as “a depravity which we will never be able to fully comprehend.”

“A mother is a child’s first protector. For a mother to use the very arms that are meant to shield her child from harm to instead physically extinguish the life of a child she created is a depravity which we will never be able to fully comprehend,” Spitzer said.

“The death of a child is a grief that can never be explained and a grief that can never be healed.”

Beisel is currently held without bail at the Orange County Jail and was charged with one felony count of murder and one felony count of assault on a child with force likely to produce great bodily injury resulting in death.

She is due in court June 30 for arraignment at the North Justice Center in Fullerton.