Currently facing 28 years in prison for the murder  of a Peruvian student, Joran van der Sloot relayed details of his troubled background and life before his arrest in a chilling handwritten letter to police, and RadarOnline.com has an exclusive copy of his writings.

Titled 'My Personal Story,' van der Sloot was asked to write the text by forensic psychologist Silvia Rojas Regalado as part of a handwriting examination and it is part of an official police document.

EXCLUSIVE DOCUMENTS: Read Joran Van Der Sloot’s Personal History, In His Own Words

While Joran Van der Sloot awaits his fate in Lima’s run-down Castro Castro prison, Peruvian homicide detective Captain Juan Callan has 21 reasons he believes the Dutchman killed and robbed Stephany Flores.

In the new investigative book, Portrait of a Monster: Joran Van der Sloot, a Murder in Peru, and the Natalee Holloway Mystery, obtained by RadarOnline.com, authors Lisa Pulitzer and Cole Thompson collected nearly 400 pages of Callan’s master file on Joran.