The Alto Nido apartment building in Hollywood, where the Faberge egg may be hidden, means "high nest" in Spanish. In Viale del tramonto (1950) Joe Gillis (William Holden) lives at the Alto Nido at the beginning of the film.
Berlyn's costume for the exteriors is a female version of Steve McQueen's in Fluido mortale (1958) and her sunglasses are a tribute to Gene Tierney in Femmina folle (1945), Joan Crawford in I dannati non piangono (1950), and Simone Signoret in I diabolici (1955).
The Bette Davis portrait from the '30s that accompanies the line "Eve studying Margo" is unusual because it was signed by Davis years later, c. 1980 (she liked to use a red or black Flair pen to sign her name around that time).
The Lana Turner house shown in the film is where Turner's boyfriend, mob-connected Johnny Stompanato, was killed in her bedroom (second floor, far left)
in 1958. Laura Hope Crews was the original owner of the house (1936).
In the celebrity homes sequence, the room where Bugsy Siegel was murdered (1947)
is in the round turret. He was reading the newspaper at 10:30 PM. It was
said to be a mob hit for financial losses incurred with the Flamingo Hotel.