Friday the 13th Part 2

Alice, a survivor of the Crystal Lake camp tragedy, is murdered in her apartment. Five years later, a group of young people returns to the scene of the macabre killings, which seems to have returned to normal, to attend a training course. When the group splits up, the relentless bloody ritual begins again. Paul, the group's leader, and his girlfriend Ginny go back to the camp to discover the massacre and also the perpetrator of the crimes, a miraculously alive but terribly disfigured Jason who thirsts for revenge.