Daniel Southworth

An investment banker with close ties to a Russian oligarch is murdered, and Sam goes undercover as a day trader to investigate. Callen believes he is a victim of credit card theft.

On Halloween, Magnum and Jin search for a skip tracer at a Halloween party, while Katsumoto tracks an escaped killer who is headed to that same party. Higgins and Rick must spend the night at an allegedly haunted house in order to debunk it.