If Hetty's team ever manages to rescue Deeks from the clutches of the LAPD, the NCIS: Los Angeles detective will be worse for ware.

'NCIS: LA' Season 7 Spoilers: Can Kensi Stay By Deeks Side? Daniela Ruah Teases 'Internal Affairs'

The OSP team knows how to keep their emotions in check (barring Deeks brief foray into water boarding), but Deeks' (Eric Christian Olsen) LAPD coworkers won't have the same restraint. The first promo for "Internal Affairs" is finally here, and the short clip subjects Deeks to quite a beating.

As a fellow detective punches the life out of the shaggy-haired jokester, Callen (Chris O'Donnell) and Co. will be faced with uncovering the truth. Is Deeks' really guilty of murder? It seems completely out of character for Kensi's (Daniela Ruah) benevolent partner, but recent episodes have seen writers laying the groundwork for viewer trepidation as Marty made some worrying comments about how far he would go to protect those he cares about.

'NCIS: LA' Season 7 Spoilers: Prepare for Deeks' "Resurrection Of Darkness', Eric Christian Olsen Talks Arrest

For now, Olsen is playing coy. He did, however, vouch for his character's innocence while sharing Deeks' mug shot.

 Exclusive first looks at Deeks' Mugshot. Nothing more dangerous than an desperate, innocent man. #ncisla

A photo posted by Eric Christian Olsen (@ericcolsen) on Nov 5, 2015 at 10:19am PST

Find out more when NCIS: LA returns to CBS on De. 7 at 10 p.m. ET.