Season 4

E1. The Dead of Winter

May 2, 2010 · 89m

After a body is found on an Oxford tour bus, Lewis and Hathaway are led to Crevecoeur Hall, a sprawling Oxford estate where Hathaway spent much of his childhood.

E2. Dark Matter

May 9, 2010 · 90m

When the master of a college is found dead at the foot of the observatory stairs, suspicion falls on all of the staff - from senior tutors right down to the scouts.

E3. Your Sudden Death Question

May 16, 2010 · 89m

On a bank holiday weekend Lewis and Hathaway are called in when a top quiz competitor is found floating dead in the fountain of an Oxford college.

E4. Falling Darkness

May 30, 2010 · 91m

Lewis and Hathaway investigate the murder of a university friend of pathologist Laura Hobson. As more deaths occur, they realise that Laura's past may hold the key.