THE CREATURE WALKS AMONG US ( 1956)

The 'Gil-Man' monster is recapured and brought to America for study. When a fire damages the creature's gills, a scientist (Jeff Morrow) agrees to perform an operation so
the creature can breathe air and live. It does, but now enraged, it becomes more dangerous than ever. Director: John Sherwood. Cast: Jeff Morrow, Rex Reason, Leigh Snowden, Gregg Palmer, Maurice Manson, James Rawley, David McMahon, Paul Fierro and Lillian Molieri.