Jonathan Walker

Detective Sherlock Holmes, along with his sober companion, Dr. Joan Watson, uses his uncanny ability to read people and analyze crimes to assist the NYPD on some of their more difficult cases. In the season premiere, Holmes consults on a home invasion that resulted in murder.

A drug raid leads to the grim discovery of a woman who has been raped and murdered. A very extensive pot-growing operation is found in her house and the "merchandise" is untouched. Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) find out from the Medical Examiner that the victim had ovarian cancer and was undergoing chemotherapy. They deduce that instead of being a street drug dealer, the victim was growing the pot to use for her own medicinal purposes, but that doesn't answer the question of who killed her. There is a break when M.E. Warner (Tamara Tunie) finds Benson and Stabler having lunch. They analyzed the vomit at the scene and it matched the NYC schools' middle school lunch menu that day, and with no sperm found on the victim, they presume their perpetrator is an adolescent.

Reese and Finch scramble to protect a software CEO (guest star Aasif Mandvi) when his behavior becomes increasingly erratic, following a hacker attack that reveals all his secrets and unravels his life.

Frank and Danny work together to help Nick Constantine (Michael Nouri), a rehabilitated ex-con who Frank put away years ago, when Constantine becomes involved in the murder of an old enemy.

Bull takes on the trial defense of Dr. Natalie Reznick (Brooke Bloom), an expert on anthrax, who is accused of orchestrating a series of anthrax attacks that terrorize the city. While the facts are against her, Bull sets out to prove the city was in such a rush to get the bacteria off the streets and calm the public�s hysteria, they arrested the wrong person.