An important piece of evidence must be retrieved in the upcoming episode 10, titled "In My Best Interest," of the third season of the American crime drama "Power."

Ghost (Omari Hardwick) decides to throw a party to celebrate his career. However, in the midst of the celebration, he tries to retrieve evidence. Meanwhile, Tasha (Naturi Naughton) has become desperate to save her family from danger so she decides to form an unlikely alliance. Tommy (Joseph Sikora), on the other hand, is thinking of pushing through a plan that may bring luck or misfortune to everyone's lives.

The promo trailer for "In My Best Interest" shows Ghost getting a warning that if the investigation of Ruiz's murder reveals that he is involved in it, his entire life and career will go down. He is also reminded that he will have the biggest loss of the murder that points to him because his business and his family are at stake. Meanwhile, Tommy is instructed that when the time comes that Ghost needs to die, he should be the one pulling the trigger.

Although Tommy has been loyal to Ghost, he also doubts his loyalty toward his friend after several situations surfaced where he had trust issues with him. If he could no longer trust Ghost, then it is possible that he can kill him with his own hands.

Meanwhile, the previous episode, titled "I Call the Shots," saw Angela (Lela Loren) tracking down the mole. Ghost, on the other hand, was busy trying to get the club deal back, while Kanan (50 Cent) tried to convince Tariq to join the dark side. Tommy also got a warning about what he will be paying if he opts to betray Milan (Callan Mulvey).

The finale episode of "Power" season 3 will air on Sunday, Sept. 25, at 9 p.m. on Starz.