9/15 Lynda La Plante's DCI Jane Tennison changed police procedurals, argues Mark Lawson.
BBC Radio 4
Miranda Sawyer explores if, in the age of cheap flights, interrailing is still popular.
8/15 Manuel Vazquez Montalban's Pepe Carvalho novels dramatise tensions in post-Franco Spain.
Miranda Sawyer on the impact of cheap European train travel on generations of Britons.
7/15 Leonardo Sciascia created crime stories to depict the power of the Mafia in Sicily.
Martha Reeves uncovers the politics of the disco movement, beginning in New York.
6/15 How PD James's Dalgliesh and Ruth Rendell's Wexford have charted changes in UK society.
Tom Mangold joins a spy-themed cruise of the Caribbean, speaking to two former CIA chiefs.
5/5 Stephen Plaice concludes his philosophical tour in Berlin.
1/3 How Clapham Junction inspired one of Britain's most celebrated songwriters.