I’m pretty sure I saw this movie in the early to mid 80’s. I suppose it could’ve been made as early as the late 70’s though. I think it might’ve been on HBO or Cinemax but I could be mistaken. It was about a pair of gamblers (man and woman) who developed some kind of psychic system to help them at card games. They tried it at a casino and won big. The casino owner didn’t appreciate it and had the man murdered. The female found a bunch of recruits and taught them the psychic ability. They all went back to the casino and used their abilities to clean it out and get revenge on the owner. I keep thinking Linda Hamilton was the female but can’t find anything in her filmography that would fit the bill so I guess it might’ve been someone similar to her. Thanks in advance for all your help.