The Two Sisters’ Secret
The Big SleepVivian’s decision to conceal Carmen’s crime protects their father temporarily while allowing the danger to continue.
increasing
Bearing strength in each event
decreasing
A Family Already Strained

A Family Already Strained
Separate lives
General Guy Sternwood describes Vivian Regan and Carmen Sternwood as moving along different paths. He admits that neither daughter has much moral sense.
A fragile household
The General’s illness limits his ability to intervene, while family wealth masks the consequences of neglect. The sisters inherit both privilege and a burden of secrecy.
Vivian’s First Evasion

Vivian’s First Evasion
Questions about Regan
Vivian questions Philip Marlowe about Terence Regan and tries to draw out the General’s purpose. She hints that she knows where Regan’s car was found.
Suspicion grows
Her evasions suggest the family already knows more than it admits. Marlowe leaves without accepting her version of the investigation.
Carmen’s Crime Confessed

Carmen’s Crime Confessed
The concealed murder
Philip Marlowe tells Vivian that Carmen Sternwood shot Terence Regan at the old oil wells. Vivian recognizes that her sister’s fits may have caused the death.
The earlier cover-up
Vivian admits that she took Carmen to Eddie Mars rather than report the crime. She feared the truth would kill their already frail father.
The Price of Silence

The Price of Silence
Mars’s assistance
Vivian says Eddie Mars helped dispose of Terence Regan’s body. The arrangement bought time but placed the sisters under a racketeer’s influence.
Moral injury
Vivian insists that preserving their father’s peace motivated her. Marlowe points out that leaving Carmen at liberty exposed the family to further danger.
Three Days to Act

Three Days to Act
A demand for care
Philip Marlowe refuses Vivian’s money and orders her to take Carmen somewhere capable of managing her condition. He sets a three-day limit.
A conditional silence
Marlowe promises to keep quiet if Vivian acts, but warns that he will expose the truth otherwise. The sisters’ secret remains dependent on a future decision.
before the investigation begins
the first afternoon
near the ending
during the same conversation
at the end of the final interview