When Stephanie Zimbalist as Inspector Churchill is asking the tobacco shop owner for information about a man who smokes Cuban cigars she offers him a $1000 bill with President Cleveland on it. She tears it in half, writes her phone number on it and in a later scene gives the tobacconist the other half after he gives her the information she is looking for. A Grover Cleveland $1000 bill was worth about $1400 in 1999 when this episode was filmed. Tearing and writing on it would substantially reduce its value, though the two halves could still be redeemed for the face value of $1,000.
A common feature of the show was to use cast members of other TV shows to make subtle references to them. Here Stephanie Zimbalist plays a foreign detective looking for a mysterious jewel thief. This comes from the origin of her former show Remington Steele, where a foreigner was involved with a jewel theft. What's more she says she smokes cigars to get the male detectives to accept her, which was something her former character had to deal with.
Philip Casnoff guest starred in the pilot episode of Remington Steele which starred Stephanie Zimbalist.
The title refers to The Seven Deadly Sins or The Cardinal Sins that have been considered immoral since early Christian times: wrath, greed, sloth, pride, lust, envy, and gluttony.