Coffee Break Cryptic

7 April

Across

1 Bend to fasten shoe, perhaps (6)
4 The average psychic? (6)
8 Japanese port - old seaport Asians know about initially (5)
9 Sure about nice art (7)
10 Hold pin out for an aquatic mammal (7)
11 Third-rate stockings selected? (5)
12 A sort of testament? (9)
17 The opening of a chain letter (5)
19 Fought to supply material for drapers (7)
21 American lawyer conceals materials (7)
22 Depicted looking strained (5)
23 Round - round round the top (6)
24 Players - or cast, perhaps (6)

Down

1 Little brother notices Norfolk sailing area (6)
2 Wine or tea taken with endless bliss (7)
3 Lead in the French wood (5)
5 Some wear a cheerful expression in affliction (7)
6 I did have a gardening implement, by the sound of it, in a state (5)
7 Fixed part of mechanism that's wound up (6)
9 Boat people making cat noises (9)
13 Skilled worker needed when a train's derailed (7)
14 Trouble afterwards to the Navy - or Air Force? (7)
15 Light material can turn red (6)
16 Handsome young man making fuss about wrongdoing (6)
18 I'm illuminated without constraint (5)
20 When detectives turn up with underwater detective apparatus? (5)