RiffTrax’s Michael J. Nelson, Kevin Murphy and Bill Corbett (of Mystery Science Theater 3000 fame) are back in cinemas to celebrate the 10th anniversary of RiffTrax Live. Join Nelson, Murphy and Corbett as they take on three B-movie classics: the guy-in-a-rubber-suit creature feature “Octaman,” the Casper Van Dien space odyssey “Star Raiders,” and new HD transfer of the MST3K favorite “Giant Spider Invasion.”

“Octaman” will be screened at 8 p.m. Thursday, April 18, at Harkins – Gateway Pavilions 18, 10250 W. McDowell Road, Avondale.

In the creature feature, a scientific expedition sets out to study an atomic mutant and stop it before it kills again. But they’re not very good at it, since Octaman kills quite a lot – probably because the scientists keep stealing its babies.

It seems there’s no stopping the monster until it develops a crush on plucky lady scientist Susan Lowry (Pier Angeli) and does what all mutant sea creatures like to do – it knocks her out and carries her away.

Directed by the writer of “Creature from the Black Lagoon,” and featuring costumes and effects by a young Rick Baker, “Octaman” is a wonderfully awful rubber monster B-movie.

Since first partnering in 2009 with “RiffTrax Live: Plan 9 from Outer Space” the RiffTrax and Fathom Events partnership has resulted in the screening of 29 unique titles, over 49 play dates, in an average of 616 movie theaters per title, with more than 1 million tickets sold for a total gross box revenue of $13.8 million (not including the 2019 events).

Tickets for all three “RiffTrax Live: 2019” titles can be purchased at fathonevents.com and participating theater box offices. For a complete list of theater locations, visit the Fathom Events website (theaters and participants are subject to change).