The house where the film was shot belonged to J.L.D. Morrison, who played the enemy agent Brandt in it.
This film's title score, and indeed much of its entire score, was taken (uncredited) from the film Kronos (1957) by Bert Shefter and Paul Sawtell.
Filmed in over five days in early 1956. It may have been released to theaters for a short period in 1957, but its general theatrical release was in 1959.
Director Jerry Warren married Brianne Murphy in Las Vegas in late 1956 and during their honeymoon there, he wrote the script for this film. It was filmed in over five days in early 1956 and it may have been released to theaters before 1959.
The film's island and speedboat scenes were shot at the Salton Sea so that location fees could be completely avoided.