Who is Anton Haliakov, who has just been abducted by the M.I.5 in London? A Soviet scientist apparently. But sixteen years before the man had another identity, Clément Tibère, and another nationality, French. So what led him to become Russian and to change identity? And why are the British secret services interested in him?
Lino Ventura
Clément Tibère
Leo Genn
Chief of M.I.5
Suzanne Flon
Jeanne
Robert Hardy
Assistant
Lea Massari
Maria
Roger Crouzet
Agent of the D.S.T.
Lucienne Legrand
Bookseller
Bernard Dhéran
M.Chat
