Demon Keeper on AllMovie

Set in New England but actually filmed in Africa for some strange reason, this derivative demon-possession opus is one of the less-inspired releases from Roger Corman's direct-to-video outfit New Horizons. The story involves an occult soiree at the palatial home of a phony-baloney psychic, where an arcane recitation summons the feral demon Asmodeus, who appears under the pretense of answering some pressing questions about the afterlife. Instead, the nefarious visitor decides to commit a serious social blunder by possessing one guest after another, setting them at each other's throats until nearly everyone is dead -- not even the family dog is spared from demonic possession. By the time the police arrive, the sole survivor (Dirk Benedict), who is also the only genuine psychic in the bunch, is blamed for the murders. Essentially a tired Exorcist knockoff (the kind which even the Italians had given up on making a decade before), this shabby, poorly-written mess also borrows the standard '80s slasher-movie convention of requiring its characters to behave like absolute morons in order to propel the plot.