Brain Game: Peri Peri Coco Bop

By changing one letter with each subsequent entry, and leaving the other three letters in their original spots, come up with four-letter names that complete the monikers of ten famous people. The bookends are actors - you'll begin with James COCO and end with PERI Gilpin. In between, you'll find singers, film characters, sports stars, and even a famous mathematician. Note that the names may be of people real or fictional, and alive or dead. Good luck!

1.  J A M E S   C O C O
2. P E R R Y   _ _ _ _
3. T O N Y   _ _ _ _
4.  _ _ _ _ W I L L I A M S
5.  J A N E T   _ _ _ _
6. _ _ _ _ D E S C A R T E S
7.  _ _ _ _ A U T R Y
8.  R I C H A R D   _ _ _ _
9.  _ _ _ _ H A L I W E L L
10.  P E R I G I L P I N