1: Girl hatches subterfuge in prison tower (11)
5: Call for help oddly stops (3)
7: Call on telephone about lock (7)
8: Fish or insect for captain (7)
10: Hole put in curtain by large cat (7)
11: Decline a stab in bum (7)
13: Famous pianist's inclination for vocalizing (5)
14: Mann's 'Death in Venice' Dorothy sent up (3)
15: Jacket feature from copy seen in fifties (5)
16: Pompously speak of no tax (5)
18: In no state to contain a pregnant virgin? (3)
19: The instruction for derelicts is inclusive (5)
21: After start of century, Maud, I'm mixing a yellow pigment (7)
22: Undercover agents concealing surplus (7)
23: Banker maintains a Greek swimmer (7)
25: Not in action referred to (7)
26: How to eat the heart of marsupial (3)
27: Western retreat satisfactory, accepted by canoeists and surfers? (3,8)