| SAFETYCURTAIN | Security somehow ruin act - a feature of the theatre (6,7) |
| RASPUTIN | Somehow ruin past of infamous Russian monk (8) |
| URANIUM | You somehow ruin Ma with a radioactive element (7) |
| ROTTENBOROUGH | Before the 1832 Reform Act, a constituency with very few electors (6,7) |
| SCARLETTOHARA | Act a role Hart's rewritten to be played by Vivien Leigh (8,5) |
| GAG | A joke or anecdote forming part of a comedian's act; a bit for a strong horse; a speech-muffling device; or, a closure imposed on a debate (3) |
| VAGARI | From Latin for "wander", word for an erratic or unpredictable change; a capricious or eccentric act; a devious excursion; a digression; a fantastic notion; a prank; a ramble; or, a whim (6) |
| ROTUNDA | Cast ruin act in final part of play (7) |
| CURTAIN | Will certainly ruin act, if out of order (7) |
| INSURANCEBROKER | Underwriter somehow ruins a new church with less money? (9,6) |
| TACITURN | Time to ruin act, turning quiet (8) |
| CURTAINS | Their falling would ruin acts in a way (8) |
| CIABATTA | Act a bit odd on getting a piece of bread (8) |
| BESTOWAL | Presenting act, a bird of the highest order entertains? |
| DRAMA | From the Greek for "do, act", a play for radio, television or theatre (5) |
| REVULSION | Disgust that somehow ruins love (9) |
| SUBMARINER | Warship crewman somehow ruins beam on river (10) |
| CLEOPATRA | Queen making pawn act a role (of Leigh and Taylor) (9) |
| MIME | The way to get me to act a certain way (4) |
| ROLEPLAY | Act a part, and run round back of hall to record song |
