Crossword Puzzle The Who drummer

Clue: The Who drummer

Whodunit theme (INTRIGUE with 8 letters)
Theory of unified wholes (HOLISM with 6 letters)
Wholes or parts (UNITS with 5 letters)
Noted thermal bath locale (VICHY with 5 letters)
Investigative division (and puzzle theme hint) (INTERNALAFFAIRS with 15 letters)
Mathematician famed for his 'last theorem' (FERMAT with 6 letters)
Owned by thee (THINE with 5 letters)
Some classic theaters (ODEONS with 6 letters)
Hagen of the theater (UTA with 3 letters)
Theater of the absurd playwright (IONESCO with 7 letters)