1a a grave statement - mine is in an untidy heap (7) ---t---
8a circus performer escape reported (4) ---a
10a impressive place of work (8,5) ---n----/-----
12a retained a thousand dollars for treatment on pet (4) -e--
17a time of night, it's said (3,2,8) ---/--/------r-
11d four roman characters in brave ramble (9) --------t
14d detectives, following young animal up, relaxed (7) ------d
20a cut down on church work (4) --o-