Classic public domain film, digitally preserved and free to stream forever.
Attack of the Giant Leeches (1959) is a Roger Corman-produced creature feature set in the Florida Everglades, where a pair of enormous blood-sucking leeches are dragging locals into an underwater cave and draining them dry. A game warden investigates as the body count rises.
Starring Ken Clark, Yvette Vickers, and Jan Shepard. This film is in the public domain and free to watch, download, and share.