A test submarine carrying a load of experimental fuel is disabled and lying on the ocean floor. The Seaview is sent to recover the volatile fuel canisters but an enormous underwater spider threatens to destroy them.
Did You Know?
Late in the filming of the second season, Richard Basehart
fell ill during the filming of the episode "The Monster's Web" and was unable to complete that episode and work in the next two. "The Monster's Web" was rewritten to minimize the part of his character, Adm. Nelson (knocked out of action in the first act), with a stand-in used for many shots with the face hidden and lines dubbed. See more