Jonathan Walker

Following a disagreement with the president, Elizabeth's position at the White House is marginalised. Also, a member of her family is involved in a new scandal.

Detective Sherlock Holmes, along with his sober companion, Dr Joan Watson, uses his uncanny ability to read people and analyse crimes to assist the NYPD on some of their more difficult cases.

An expert on anthrax is accused of orchestrating a series of anthrax attacks. Bull sets out to prove the city was in such a rush to calm the public's hysteria, they arrested the wrong person.

Frank and Danny try to help a rehabilitated ex-con when he becomes involved in the murder of an enemy; a prosecutor withholds the location of an alleged killer from Erin as she prepares for the trial.

Finch and Reese rush to protect a software chief executive officer when his behaviour becomes erratic following an attack by a hacker.

At the Farm, Harry is still suspicious of Alex and Ryan, and he's determined to learn more about their plan, while Leon is recruited for a special assignment by Owen.