Nero Wolfe
Archie Goodwin
Paul Chapin
Evelyn Hibbard
Pitney Scott
Agnes Burton
Mark Chapin (as Allen Brook)
Ferdinand Bowen
Prof. Hibbard
Dr. Burton
Augustus Farrell
Dora Chapin
Inspector Cramer
Michael Ayers
Nicholas Cabot (as Ien Wulf)
Alexander Drummond
Fritz
Joe
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