Patricia Skeriotis

Monk, Sharona, Captain Stottlemeyer, and Lieutenant Disher arrive in New York City to pursue a lead in the murder case of Monk's wife, Trudy. Dale the Whale has given them the name of a man that was involved: Warrick Tennyson. But before they can even check into their hotel rooms, Monk becomes a witness in the shooting death of the Latvian Ambassador to the United States. Unfortunately, Monk only gets a glimpse of the killer's left ear as he flees the scene of the crime.

The team investigates the disappearance of Anwar Samir (Dariush Kashani), a Saudi Arabian medical intern who became upset when his boss refused to write a letter of recommendation for him, and his girlfriend declined his marriage proposal. Anwar is a hardworking and well-respected doctor whose every move becomes subject to interpretation after he disappears. His desire to work at the Centers for Disease Control to study infectious diseases, his girlfriend's lack of knowledge about his career ambitions and even the books in his apartment suggest that he might have a hidden connection to terrorism. As Jack coordinates the investigation with the Joint Terrorist Task Force (JTTF), he discovers that samples of a virus are missing from a biotechnology company where Anwar once worked. Meanwhile, the team thinks that Martin--who is convinced that Anwar is a terrorist--may be more concerned with impressing the JTTF supervisor than with the truth.

A traumatized victim is reluctant to testify when a suspected serial killer insists on acting as his own attorney.