1: Write off aggregate (5)

4: Throw out faulty nib (3)

6: Lies for each twelve men (7)

7: Puts down carbon copy of scenery (9)

9: On second thoughts, rising fish glitter (7)

11: Perform part of play (3)

12: Only one mortgage reported (5)

1: Perfect counter-spy equipment (3)

2: I turn, lost, in Italian city (5)

3: A state, see - one in America - one with an American capital (9)

4: Sounds like a wolf on the coast (3)

5: Tender translator of runes (5)

7: I got by in Los Angeles or a North African state (5)

8: English features of Italian glories (5)

9: Inflexible yet adjusted (3)

10: Sound of river crossing (3)