Alleged "Craigslist killer" Philip Markoff was put on a suicide watch in a Boston jail after corrections officers found shoelace marks on his neck.
The former Boston University medical student's future father-in-law told reporters that his daughter is still "praying" the arrest is a mistake.
"She's still confident in Phil. Other than that we're saying a lot of prayers," said Jim McAllister, father of fiancee Megan McAllister, 25.
Megan McAllister was planning to marry Philip Markoff, 23, on August 14 on the Jersey Shore. He did not say if the wedding is still on.
So just who is Philip Marokff, the alleged Craigslist Killer?
Markoff stands accused of murdering masseuse Julissa Brisman, 26, and the same day he's suspected of attempting to rob a woman at a Warwick, R.I., hotel.
Cops say the brainy blond doctor wanna-be, who grew up in upstate Sherrill, N.Y., has no rap sheet, but they think he has preyed on sex workers for a while.
Police begged other victims to come forward.
Julissa Brisman, the slain 26-year-old New Yorker, advertised her services on Craigslist and was shot to death in a posh Boston hotel last Tuesday.Markoff also will be charged with kidnapping and robbery of an exotic dancer who advertised online four days earlier in another luxury Boston hotel.
Police believe last Thursday's armed robbery of a Las Vegas hooker in a Rhode Island hotel may also be connected to the aforementioned attacks.
A Cape Cod woman said she sat next to him at a blackjack table at Foxwoods casino in Connecticut, two days after the alleged crimes. Markoff spent about $600 and hardly said a word, bringing down the upbeat mood at the table.
His behavior was so odd, she said, that she mentioned it to friends after. When she saw his picture in a newspaper after his arrest, she recognized him immediately.
Foxwoods issued a statement earlier this week confirming its cooperation with police in the Markoff investigation. In another development, a friend of Markoff's started a Facebook page titled "Phil Markoff is Innocent Until Proven Guilty."
The purpose: to "Rally against media quick to place blame, against the culture that has forgotten that people like Phil Markoff are suspects, not killers."