George Cisar

After local-moonshine swilling trapper Lem Sawyer sees a giant creature, people start disappearing. While searching for illegal traps Steve Benton and Nan Greyson, his girl-friend find Lem dying with giant sucker wounds on his body. One couple Liz Walker and Cal Moulton, forced into the water by her enraged husband Dave Walker, gets taken by the leeches... (imdb)

The town of Mountaincrest is threatened after a man is found dead in an alley, seemingly killed by a wild animal. It's soon revealed that the culprit is an amnesiac who was experimented upon by a scientist dabbling with animals and radiation.

Young street tough sent to a reform farm is torn between friends from his past and those who are trying to help him change his life. (imdb)

A scientist, flying his experimental plane, is shot down behind enemy lines in Korea. It's up to three soldiers and a Russian nurse to save him.