'Arrow' season 6 episode 5 spoilers: Slade seeks Oliver's help to find his son

Promotional poster for "Arrow" season 6.Facebook/Arrow

In the next episode of "Arrow," Slade Wilson a.k.a. Deathstroke (Manu Bennett) returns and asks Oliver Queen a.k.a. Green Arrow (Stephen Amell) to help him find his son Joe (William Franklyn-Miller).

The trailer for the upcoming installment titled "Deathstroke Returns" was released just recently and showed Slade telling Queen, "I need you to help me find my son." The Arrow appears cautious at first but agrees to use everything in his power to locate the missing boy. His investigation leads them to a group of mercenaries whom they think is keeping the kid. Slade asks the lead mercenary where Joe is but he replies, "It is complicated." It seems they may have found the location of Slade's son. Queen tells the lead soldier, "Trust me on this one. Do not make this man angry." Later, Slade prepares to take on the group of mercenaries. He equips himself with his guns and knives, and then puts on his iconic red helmet.

Deathstroke wastes no time in engaging the enemy. He charges each mercenary one by one and knocks them out at once with his punches and kicks. He is bent on getting back his missing boy. Nevertheless, it remains to be seen if he will be able to rescue Joe without getting captured or hurt in the process.

In the last episode, Team Arrow took on Black Siren a.k.a. Laurel Lance (Katie Cassidy) and Cayden James (Michael Emerson) who supposedly wanted to destroy the internet. John Diggle (David Ramsey) and the rest of the team were able to stop him. However, it turned out that he just wanted to upload a code to the internet so that he could use it for a nefarious reason later.

"Arrow" season 6 episode 5 will hit the airwaves on Thursday, Nov. 9 at 9 p.m. EDT on The CW.