Omen III The Final Conflict originally released as The Final Conflict is a 1981 American horror film directed by Graham Baker. It is the third installment in The Omen series. Starring Sam Neill, Lisa Harrow and Rossano Brazzi, the film tells the progression of the now adult Damien Thorn to position of earthly power, set against the countdown to the Second Coming and attempts of a group of priests to kill the Antichrist. The film was released in theatres on March 20, 1981.
After the alignment of stars in the Cassiopeia constellation on March 24, 1982, generating what is described as a second Star of Bethlehem, Damien realizes it is a sign of the Second Coming and orders his followers to kill all boys born in England on the morning of March 24, 1982 to prevent the Christ Childs return to power. A week after a string of thirty one infant deaths, Reynolds encounters DeCarlo as he reveals Damiens true identity to her while giving her evidence of the murders. The next day, Damien rapes Reynolds. The following morning Reynolds discovers Damiens birthmark. Damien tells Peter to follow DeCarlo, resulting in Damien learning that his advisor, Harvey Dean, had concealed the date of his sons birth when Peter reports DeCarlo visiting Deans wife Barbara and revealing her husbands role in the infant murders. Dean refuses to kill his son and makes preparations to flee the country, only to return home and be killed by his wife, Barbara, who has fallen under Damiens control and murdered their child.DeCarlo later visits Reynolds and reveals that Peter is now under Damiens influence and that the real Christ Child is now beyond Damiens reach. Agreeing to help DeCarlo, Reynolds tricks Damien with the promise to bring him to the church ruins where the Christ Child is in exchange for Peter. But the plan backfires when Damien spots DeCarlo first and uses Peter as a human shield against the dagger. As Peter dies in his mothers arms, Damien strangles Father DeCarlo before calling out Christ to appear before him. But this leaves Damien open to be stabbed in the back by Reynolds using DeCarlos Megiddo dagger. As Damien staggers through the courtyard and collapses, a vision of Christ appears in the archway above him. Damien scolds Christ for thinking he has won, and then dies. DeCarlo reappears carrying Peters body and hands him to a praying Kate before they leave the ruins. ........
Source: Wikipedia