In the next episode of "Once Upon a Time" season 5, titled "The Brothers Jones," Hook will get to reunite with his brother Liam. However, the older Jones's arrival is set to "tear two lovers apart."

Emma finally gets to meet the brother of the man he loves but her first impression on him is not all that dazzling. In fact, Liam thinks that his brother is too good to be with her.

"He doesn't think I'm good enough for Hook," a despondent Emma tells Regina in the "Once Upon a Time" season 5 promo after the latter realizes Liam seems to not like her.

Liam, who is the only person that the heroes can turn to in order to get out of the Underworld, is not keen on helping them. He may even be able to convince Hook to stay.

By the end of the "Once Upon a Time" season 5 promo, Hook shuts down a heartbroken Emma after she persuades him to come home. "Why bring me back if I should just move on?" he tells his beloved.

[Spoiler Alert!] Rumor has it that Liam is under Hades's control and is unable to fight it. There are speculations he is simply working for him. This is because the lord of the Underworld wants them to end up betraying the heroes.

If this is indeed the case, the question now is whether or not Hook will realize that Hades is pulling the strings and that he is determined to get the last laugh.

Meanwhile, promo photos from the "Once Upon a Time" season 5 episode hint that Henry will try to figure out on his own a way to defeat Hades. It looks like he will meet some interesting folks along the way.

"Once Upon a Time" season 5 episode 15 "The Brothers Jones" airs March 27 at 8 p.m. ET on ABC.