Before I embark on the endgame, can I get a parse for these two, the answers are clear but not the wordplay .....
18a - Parasite having flat-topped cap seizing power violently (8)
I've tried taking P from my answer but it doesn't seem to lead to anything.
7d - Tessa ran naked: could be Anna’s _____ (8)
My answer means "ran naked", but how is that derived from Tessa ... could be Anna?