NEED TO KNOW

Rebecca Park went missing at 38 weeks pregnant on Nov. 3, and when her body was discovered on Nov. 25, the fetus was gone

Her biological mother, Cortney Bartholomew, is now charged with murdering her daughter and cutting out her unborn child from her womb, according to court documents obtained by PEOPLE

Those documents also allege that Rebecca's fiancé Richard Falor had affairs with both her sister Kimberly Park and her mother Cortney

New details about the murder of Rebecca Park and the role her family members are suspected of playing in that crime are being revealed in a series of probable cause affidavits and criminal complaints filed in a Michigan court and obtained by PEOPLE.

Those documents allege that Rebecca, 22, her sister Kimberly Park, 21, and her biological

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