WARNING: This article contains spoilers from Reacher.

Reacher welcomed actor Robert Patrick for season two and added a subtle reference to his movie Terminator 2 in the premiere.

The action-packed drama, based on the work of author Lee Child, returned for season two on Friday, December 15, with the first three episodes dropped on Prime Video.

This second outing introduced Shane Langston (played by Robert Patrick), a mysterious private defence contractor who is determined to see Jack Reacher (Alan Richson) and his team dead.

This isn't the first time Langston has portrayed a villain either, having portrayed Ray Schenkel in Law and Order SVU, Colonel Merton in NCIS, the Skiptracer in Identity Thief and White Dragon in Peacemaker, just to name a few.

Most notably. Patrick was behind T-1000 in Terminator 2: Judgement Day, a shapeshifting android whose mission was to assassinate Sarah (Linda Hamilton) and John Connor (Edward Furlong).

Read more: Reacher season 2 release time - everything there is to know

With the introduction of Patrick in the cast as Langston, creator Nick Santora couldn't help but include a Terminator Easter Egg as a nod to the 65-year-old's Hollywood past.

In the season two premiere ATM, Reacher and Frances Neagley check into a hotel under the aliases Starlin Castro and Sarah Connor respectively.

When Patrick's Langston finds out about this, he says: "Starlin Castro played for the Yankees, six or seven years ago."

But when his henchman questions who Sarah Connor is, Patrick's character replies: "I don't give a s**t."

Sarah Connor, who is played by Linda Hamilton, stars in The Terminator franchise, having first appeared in the 1984 movie where she learns she is being hunted by a cyborg assassin.

She is targeted by the evil assassin from the future as her unborn son, John Connor, will one day save mankind from extinction by hostile artificial intelligence called Skynet.

It is then in the 1991 sequel, Judgement Day, that the mother-and-son duo are hunted once again, this time by the more advanced T-1000.

Subscribers couldn't help but take to X, formerly Twitter, to point out the moment.

One viewer wrote: "Robert Patrick saying 'I don't give a s**t...' after being asked who Sarah Connor was, is some gold star writing."

Another commented: "Robert Patrick pretending to not know who Sarah Connor is, was a fun little throwback to Terminator."

And a third added: "Having a 'Who is Sarah Connor?' joke with Robert Patrick saying he doesn't care is a hilariously meta joke."

Reacher is available to watch on Prime Video.