Series 4


 * Text from Wikipedia, needs rewriting.

Series 4 (2013)

Unlike the previous series's, broadcast on Wednesdays at 9pm instead of Mondays at 9pm. Kept series 3's format of 3 lots of two episode cases.

Guest & Recurring cast:
 * Daisy Beaumont as Stella Knight
 * David Gant as Alexander Zukanov
 * Brian Protheroe as Crispin Wingfield