The Rain Killer (1990) is a Thriller, Crime, Horror film that follows together, a weary cop and an all business FBI agent, team up to catch the latest homicidal manic: The Rain Killer. Just when they think that all the clues have been washed away, they find the one last clue; the one that's been in plain sight. Currently, you can watch The Rain Killer on Shout! Factory Amazon Channel, Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 4.1 out of 10 from 12 votes. Fans of thriller movies may also want to explore similar titles below.