The film Bartholomew the Strangler is fictitious, as is, so it seems, actor [?] Tom McGurth (who is named on the posters outside the movie theatre).
Some erroneous modern sources identify Sara AllgoodSara Allgood as the uncredited actress playing the bird shop customer, but she does not appear in this film. The identity of the actress in question is presently unknown.
Robert DonatRobert Donat was originally slated to play Ted Spencer, but a prolonged illness prevented him from playing the role.
Some critics objected to the way Alfred HitchcockAlfred Hitchcock chose to end the sequence involving the delivery of the bomb on the bus. Hitchcock, stung by the criticism, is said to have regretted his decision. Nonetheless, the treatment is faithful to Joseph ConradJoseph Conrad's book.