Merril Grupp is a literature student at Juilliard and a suspect in the murder of Allison Reich. He wrote disturbed online fantasy journals about stalking and violently killing Allison, as well as stole her lingerie when he was at a party in her dorm room the night she was murdered.
Grupp as exonerated when his computer’s time stamps alibied him for the murder, and the real killer, Allison’s roommate Megan Maslin, was revealed to have lied to pin the blame on Grupp. His legal status afterwards is unknown. (L&O: "Paranoia")