Law & Order Season 26 Episode 6 highlights: Calvino and Walker investigate the death of a medical student as questions of mental health emerge

Law & Order Season 26 Episode 6, titled Do No Harm, aired on November 12, 2026, on NBC. The episode is also available to stream on Peacock. According to the synopsis, the episode follows the mysterious death of a medical student as Walker and Calvino uncover a shocking motive.

The episode began with a woman leaving a university campus at night. A male figure was stalking her. A security guard asked her whether she would like a security escort, but she declined it politely. The next day, the woman was found dead on her bed. Walker and Calvino arrived to investigate. Her roommate informed the authorities after she saw the woman lying dead the next morning. There were no signs of break-ins, but her phone was missing from the crime scene. The forensics suggested that the victim was killed while she was sleeping.

Here's more about Law & Order Season 26 Episode 6.

Law & Order Season 26 Episode 6 recap: Calvino and Walker investigate a med school student's death

The authorities found out that the victim's name was Grace. Her roommate said that they lived together for one and a half years. The roommate also said that Grace was kind of a loner and barely had visitors. She added that Grace was in a jolly mood for the past few weeks and left the apartment more often. The victim's roommate confirmed that last night she was on medical duty. Walker and Calvino met Grace's parents in Flushing. Her parents revealed that she had been dating a fellow grad student, Curtis Foster. Grace broke up with Curtis a month before her death.

Law & Order Season 26 Episode 6 recap: Grace was choked to death and was injected with a lethal injection

Walker and Calvino met Curtis. Curtis revealed that they had dated for six months, and Grace broke up with him, saying she didn't see a future with Curtis. He revealed Grace called him on the night of Grace's death, but he didn't pick up because he was at a concert. The forensic reports suggested that there were teardrops beside Grace's body.

The doctors found cotton fibres in her nasal passageway, mouth, and lungs, which proved she was choked to death with a pillow. There were three small puncture wounds and chemicals in her body that were similar to what prisons use for lethal injection. Calvino said that it wasn't a murder but an execution. Walker found out that Grace received a threatening message from her fellow med student named Todd Long.

Walker and Calvino interrogated Todd. He said Grace wrote an assignment for him and was trying to come clean to the professor. Todd told the detectives about Dr. Aekansh Reddy, a faculty advisor who was arguing with Grace a few days before her murder. Walker said that Dr. Reddy was a controversial figure and the students protested against him to get his tenure revoked. Grace apparently found out that Dr. Reddy was a consultant for federal penitentiaries and advised on lethal injections.

Who killed Grace in Law & Order Season 26 Episode 6?

When Calvino and Walker spoke to Dr. Reddy, they found out that Dr. Reddy was arguing with Grace because she apparently decided to drop out. Dr. Reddy told them about Grace interning at a research lab led by Dr. Anton Visser. He suggested that this might have something to do with Grace dropping out. Anton said that his relationship with Grace was professional. Anton was brought in for interrogation after they found missing drug vials from his lab that matched those used in Grace's lethal injection.

Anton revealed that he had a fallout with Grace but maintained that he did not kill Grace. Anton was written off the suspect list after CCTV footage confirmed that he was at his home.

Walker found the list of researchers who were present at the lab just before Anton reported the drugs went missing. They found Curtis' name on the list and found out that he visited Grace in the lab. Maroun found that Curtis' DNA matched the evidence and extracted threatening messages that Curtis sent to Grace.

Law & Order Season 26 Episode 6 ending explained: Price and Maroun fight for Grace

The prosecutors said that Curtis was behind Grace's murder. However, the defense attorney revealed that Curtis was at Grace's apartment on the night of her death. The defense attorney argued that Grace had asked Curtis to help her end her life. The defense claimed it was an assisted suicide. Price played a video of Grace saying that she had decided to end her life at the counselor's office.

Price argued that the defense intentionally brought up the video despite evidence that stated that Grace was murdered. The defense said that Grace was severely depressed for years and she asked Curtis to kill her. The defense claimed Grace tried killing herself two times before. Grace's psychologist said that Grace had treatment-resistant depression. Grace's parents asked Maroun to drop the charges on Curtis. The court found Curtis Foster guilty of killing Grace.

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