Tune in to CBS tonight at 8 PM (official East Coast start time) to see what will happen next on "NCIS" Season 12! Watch Episode 3, where we will see "So It Goes," using our free live stream links. Check out an awesome preview video featuring actor Mark Harmon and Ducky, spoilers, and more below!

According to the official synopsis of "So It Goes," Episode 3 of Season 12, "Ducky returns to London after a case reveals a connection to his estranged childhood best friend. Agent Bishop accompanies him on the trip, and they interview his friend's family and coworkers. Meanwhile, Ducky recalls the choices he made in the past and the impact they've had on his adult life."

Make sure you tune in to CBS tonight at 8 PM (start time) to catch all of the Season 12, Episode 3 excitement!

Won't be able to catch Episode 3 of "NCIS" Season 12 on a TV? Well, we've got you covered with free online live stream links!

Check out a live stream of "NCIS" on this CBS free live stream channel online - click here or here (depending on your region, only one may be accessible) to watch Episode 3 from your computer!

What should we look forward to for tonight's episode and the rest of Season 12 featuring star Mark Harmon? Warning: spoilers ahead!

Hallels reports, "NCIS season 12 episode 3 airs on Tuesday October 7, and it's titled "So It Goes". The show starts at 8PM on CBS. The episode was directed by Leslie Libman, and written by Steven D. Binder. In the previous episode "Kill the Messenger", the NCIS team investigated the murder of a Navy lieutenant. In the new episode, we'll know more about Ducky, as we get to see a glimpse of Ducky's childhood days. In "So It Goes", Ducky and agent Bishop will travel to London and investigate a case linked to Ducky's childhood best friend, Maggie Clarke (Alice Krige/Hannah Marshall). The two will be visiting Maggie's family and co-workers for an interview. Meanwhile, Ducky revisits his past, as he reflects on the impact of his past decisions in life. We will also see Ducky reunite with Maggie, and we will finally learn the story behind Ducky's bowtie. Young Ducky will be played by Adam Campbell as a special guest star in the upcoming episode of NCIS season 12."

According to next week's episode synopsis of "NCIS," called "Choke Hold," there's plenty of action and drama in the air. TV Guide reports, ""The NCIS team is assigned to a joint terrorism task force by the Secretary of the Navy after a Naval research scientist is murdered and the chief suspect is wanted by the Russian government. Gibbs and DiNozzo run interference with task force leader Leia Pendergast." Episode 4 already looks very entertaining! But we've got more...

It will certainly be interesting to see all of this play out! Check out the Season 12 "So It Goes" preview video here:

What else will happen tonight on "NCIS" Season 12, Episode 3? You'll have to wait and see! Tune into CBS, or one of our free online live stream links above, to catch all the excitement of this Season 12 episode, called "So It Goes!" Make sure to catch the episode on tonight at the official start time of 8 PM EST!