PERRY MASON — Prominent lawyer, who loves to skate on thin ice
DELLA STREET — Mason’s secretary and skating partner
JACKSON — Law clerk in Mason’s office
MR. and MRS. ARTHUR BICKLER — Whose auto accident seemed trivial... at first
PAUL DRAKE — Private detective and Perry Mason’s trouble-shooter
FRED MILFIELD — Who knew very little about sheep
DAPHNE MILFIELD — Fred’s wife, who knew a great deal about wolves
HARRY VAN NUYS — A wolf in sheep’s clothing
LIEUTENANT TRAGG — A clever policeman, but not quite clever enough
CAROL BURBANK — A girl with both beauty and brains
ROGER BURBANK — Carol’s father, who needed an alibi
DOUGLAS BURWELL — A nice woolly lamb
FRANK PALERMO — Who clipped sheep and people
JUDGE NEWARK — Who was curious about ocean tides
HAMILTON BURGER — Prosecutor, determined to put an end to Perry Mason’s career
J. C. LASSING — A reluctant witness
T. L. CAMERON — Boatman who knew a great deal about ocean tides