The Inspector Lewis Series episode list

Season 1

Whom the Gods Would Destroy
Old School Ties
Expiation

Season 2
And the Moonbeams Kiss the Sea

Music to Die For

Life Born of Fire

The Great and the Good

Season 3

Allegory of Love

The Quality of Mercy

The Point of Vanishing

Counter Culture Blues

Season 4

The Dead of Winter

Dark Matter

Your Sudden Death Question

Falling Darkness

Or make a librarian's heart sing and pick up one of the books by Colin Dexter which inspired the Inspector Lewis character -

Last Bus to Woodstock (1975), Last Seen Wearing (1976), The Silent World of Nicholas Quinn (1977), Service of All the Dead (1979), The Dead of Jericho (1981), The Riddle of the Third Mile (1983), The Secret of Annexe 3 (1986), The Wench Is Dead (1989), The Jewel That Was Ours (1991), The Way Through the Woods (1992), The Daughters of Cain (1994), Death Is Now My Neighbor (1996), The Remorseful Day (1999)