When genetic supermen left over from the Eugenics Wars hijack a Klingon ship, Archer must rely on their creator, the criminal Dr. Arik Soong, to help hunt them down. Upon reaching the volatile Borderland, T'Pol and eight other crewmen are kidnapped by Orion slave traders.

Brent Spiner (Dr. Arik Soong)

Alec Newman (Malik)
Abby Brammell (Persis)
Joel West (Raakin)
Big Show (Orion Slaver #1)
Dave Power (Ensign Jeffrey Pierce)
J.G. Hertzler (Klingon Captain)
Dayo Ade (Klingon Tactical Officer)

Gary Kasper (Orion Slaver #2)
Bobbi Sue Luther (Orion Slave Woman)
Thom Williams (Klingon Soldier #1)
Fernando Chien (Saul)

• This episode is part 1 of a 3-part arc featuring Soong and the augmented humans.
  
• The Borderland is a volatile area of space between the Klingon Empire and the Orion Syndicate.
  
• This is T'Pol's first official day as a Starfleet officer; she has been given the rank of Commander. For some reason she does not wear a Starfleet uniform, but a cross between her 3rd season jumpsuit and the Starfleet uniform, including the Enterprise patch, blue science stripes, and the three rank pips.
  
• Soong thawed the embroys 20 years prior and raised them until he was arrested 10 years ago. Raakin was the leader of the augments, until Malik ambushed and killed him.
  
• Arik Soong is a distant relative of Dr. Noonien Soong, creator of the android Data. (Brent Spiner is obviously best known for his role as Data on Star Trek: The Next Generation.)
  
• J.G. Hertzler (Klingon Captain) also played Klingon General/Chancellor Martok on Deep Space Nine.