Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: When struggling writer Susan Berman, the daughter of a notorious Las Vegas mafia leader, took a bullet in the back of her head in Los Angeles' Benedict Canyon in late December 2000, the case quickly turned cold. It wasn't until 15 years later that New York State police focused on the eccentric multimillionaire Robert Durst. The estranged scion of one of New York City's most prominent real estate dynasties had been under the watchful eye of law enforcement officials since his first wife, Kathleen vanished in 1982. Kathleen had confided to friends shortly before her disappearance, 'If anything ever happens to me, don't let Bobby get away with it'. Her body was never found.Writer Susan Berman was the daughter of a notorious Las Vegas mafia boss and the best friend of her accused murderer Robert DurstBerman was shot execution-style in the back of her head in LA in 2000; a new book explores her life and tragic deathFive days prior to her death that she boasted to friends she had information that would 'blow the top off things. It turned out to be her headBerman's cousin Rosalie Bruce, said 'Susie put too much pressure on Bobby'The only real witnesses to Berman's murder were her three wire-haired terriers, Lulu, Romeo and GoldaNeighbors were reluctant to confront the cantankerous Berman about the noisy dogs so it was a day and a half before body was discovered 
 Question:She never really recovered from the loss of her parents and _ took their place.

Robert Durst