watch90210.info synopsis: Navid (Michael Steger) and Gia (guest star Rumer Willis) launch an investigation into student drug use at West Beverly for Blaze News, which leads them to Annies (Shenae Grimes) boyfriend, Jasper (guest star Zach Sherman), leaving Annie torn over who to believe. Fresh off his break-up with Adrianna (Jessica Lowndes), Navid receives dating advice from Samantha Ronson (appearing as herself) while out with Liam (Matt Lanter), Teddy (Trevor Donovan) and Ivy (guest star …