CRYPTIC CROSSWORD No. 16,539

ACROSS: 1 Rescript. 5 Tennis. 9 Slipshod. 10 Stupid. 12 Apex. 13 Bone marrow. 15 Self-evidently. 19 Elephant grass. 23 Ramshackle. 25 Slip. 28 Exodus. 29 Defiance. 30 Summer. 31 Cylinder.

DOWN: 1 Rascal. 2 Snipe. 3 Rash. 4 Propose. 6 Extra. 7 Nephritis. 8 Sideways. 11 Semi. 14 Blah. 15 Steam room. 16 Vat. 17 Exam. 18 Peerless. 20 Neck. 21 Gallery. 22 Appear. 24 House. 26 Lined. 27 Hi-fi.