After Young Ian's (Jamie Bell) abduction, Jamie (Sam Heughan) and Claire (Caitriona Balfe) will embark on a journey to Jamaica in the next episode of "Outlander" to save the lad. However, they will have a surprising encounter as they sail the high seas.

In an attempt to retrieve the buried treasure Jamie found on the Silkie Island, Young Ian was previously taken by a group of unidentifiable men and carried off to their ship while Claire and Jamie watched in horror, helpless, from a nearby cliff. The couple promised Jenny (Laura Donelly) and Ian (Steven Cree) they would take care of their son, so they will go after him next episode.

Of course, Fergus (Cesar Domboy) will be joining the voyage with "Milord" and "Milady." However, he brought an unexpected companion who the couple, especially Claire, does not want to be around with. The person in question is none other than Laoghaire's (Nell Hudson) eldest daughter, Marsali (Lauren Lyle). Apparently, they handfasted back in Scotland and are now married, although they have not bedded yet, so it is not binding.

As seen from the clip, Jamie's stepdaughter has understandably taken a dislike to Claire, who is not thrilled to have her around as well. The way Marsali sees it, Balfe's character took away Jamie from their mother even though the two have not lived under the same roof for months. She even calls her an "English whore."

Jamie decides to send Marsali back home. However, she threatens him with something that makes her stepfather change his mind. In fear that she will tell everyone she and Fergus have already slept together, Jamie retreats on his plans and ultimately agrees she joins them to Jamaica under one upsetting condition: Fergus does not touch her, and she shares a room with Claire.

Check out the sneak peek below:

"Outlander" season 3 airs Sundays, at 8 p.m. EST on Starz.