Air date: 2012-05-16

Runtime: 90 min

When a botanist accidentally digs up the body of the recently buried Murray Hawes, Lewis and Hathaway are set upon a seemingly impossible quest.

Air date: 2012-05-23

Runtime: 90 min

Lewis and Hathaway are drawn into a world of virtual bullying, but very real murder, when a professor is found dead after her dating video is leaked online.

Air date: 2012-05-30

Runtime: 90 min

When a babysitter is found dead, Lewis and Hathaway are drawn into diverse new worlds including squats, swinging suburbia, primate labs and fetish photography.

Air date: 2012-06-06

Runtime: 90 min

Lewis and Hathaway investigate when a controversial American academic is murdered after speaking at Oxford's Department of Criminology.