1: I catted around, in demand (7)
6: Part of book covers ballpark legends, using reliable background sources (5)
7: Vet theatre opening 8-down (3)
8: Evil colleague, for example, breaking in contrary to law (9)
10: Drawing, for example, a bit of a cartoon (3)
12: Retro gents in exotic parks (5)
14: Have sheriff's helpers joined Nazi police (7)