STAGE TUBE: Sneak Peek - 'Lost Things' on Tonight's UNFORGETTABLE on CBS

On tonight's episode of CBS' UNFORGETTABLE entitled "Lost Things", Carrie and Al investigate the death of a public defender, only to discover that the killer has a larger plan which may lead to a second murder.

UNFORGETTABLE stars Poppy Montgomery as Carrie Wells, an enigmatic former police detective with a rare condition that makes her memory so flawless that every place, every conversation, every moment of joy and every heartbreak is forever embedded in her mind. It's not just that she doesn't forget anything - she can't; except for one thing: the day her sister was murdered years ago. Since then, Carrie has tried to put her past behind her, but she's unexpectedly reunited with her ex-boyfriend and partner, NYPD Detective Al Burns (Dylan Walsh), when she consults on a homicide case. His squad includes Det. Mike Costello (Michael Gaston), Al's right-hand man; Detective Roe Saunders (Kevin Rankin), the junior member of the team; and Detective Nina Inara (Daya Vaidya), a sassy, street-smart cop. Surprisingly for Carrie, being back on the job after a break feels right. Despite her conflicted feelings for Al, she decides to permanently join his unit as a detective solving homicides - most notably, the unsolved murder of her sister. All she needs to do is remember.

UNFORGETTABLE airs on Tuesdays at 10:00 pm ET on CBS.

To view a clip of tonight's episode, click below!