During negotiations for the Barzan wormhole, Troi becomes involved with delegate Devinoni Ral. Troi finds out that he is secretly using his Betazoid abilities to manipulate the other delegates to his advantage.

Matt McCoy (Devinoni Ral)
Elizabeth Hoffman (Premier Bhavani)
Scott Thompson (DaiMon Goss)
Castulo Guerra (Seth Mendoza)
Dan Shor (Dr. Arridor)
Leslie Jordan (Koll)
Colm Meaney (Chief Miles O'Brien)

• Professional negotiator Devinoni Ral is 1/4 Betazoid, but he keeps it a secret.
  
• We first get to see Counselor Troi's office in this episode. Troi first mentions she loves chocolate.
  
• Arridor and Koll are found in the Delta Quadrant by the U.S.S. Voyager in the episode "False Profits".
  
• This episode introduces the concept that the Galaxy is divided into 4 quadrants: Alpha, Beta, Gamma and Delta.
  
• This wormhole isn't stable; the endpoint randomly moves around. The Barzan data set the endpoint as somewhere in the Gamma Quadrant, but during the test, the endpoint was located in the Delta Quadrant.
  
• The first stable wormhole is found in the Deep Space Nine pilot "Emissary", which does indeed lead to the Gamma Quadrant.