Build a movie plot around this: Who does Thea agree to play in Milo's scheme against Andrew? the murder victim
A:
Andrew Wyke (Olivier), a successful writer of crime fiction, who lives in a large country manor house filled with elaborate games and automata, invites his wife's lover Milo Tindle (Caine), a hairdresser of Italian heritage, to his home to discuss the situation. Andrew explains that he has tired of his wife and wants Milo to take her off his hands. In order to provide Milo with enough money to take care of her, Andrew suggests that Milo steal some jewellery from the house, with Andrew recouping his losses through an insurance claim. Milo agrees and allows Andrew to lead him through an elaborate charade to fake the robbery. At the conclusion, Andrew pulls a pistol and reveals that the entire plot was meant to frame Milo as a robber, giving Andrew an excuse for shooting him. Andrew then appears to execute Milo by shooting him in the head.A few days later, a policeman, Inspector Doppler, arrives at the manor house to investigate Milo's disappearance. Andrew at first purports to know nothing, but his guilt becomes evident as the inspector collates clues. Frightened, Andrew breaks down and explains the burglary ruse but insists that he only pretended to shoot Milo using a blank cartridge and that his rival left the house humiliated, but alive. Andrew insists that he has no knowledge of what happened to Milo after he left the house. After finding more seemingly unmistakable evidence that a murder has taken place recently in the house, Doppler arrests Andrew for murder. As Andrew is about to be taken to the station, Doppler reveals himself to actually be Milo, in disguise, having engaged in the deception to get revenge on Andrew.Just as the score seems to be even between the two, Milo explains that they will now play another game, this time involving a real murder. Milo describes how he visited Andrew's mistress, Tea, that afternoon, and strangled her. The police will soon be arriving and that he has planted evidence throughout the house that could well incriminate Andrew in Tea's murder. Andrew dismisses this but...