"The Young and the Restless" spoilers for the week of June 25 to 29 tease that the latest news about the search for J.T. Hellstrom (Thad Luckinbill) will make Sharon (Sharon Case) and Victoria (Amelia Heinle) nervous. On Monday, June 25, Nick (Joshua Morrow) learns, from his private investigator, that someone is using J.T.'s credit cards, and he is worried J.T. is on his way back to Genoa City. Sharon acts surprised upon hearing the update [VIDEO] from Nick, and they go together to see Victoria and warn her about this development. Victoria questions her brother about whether anyone saw J.T. actually using his cards, and they debate the chances of him coming back, according to spoilers via Soaps.com.

Victor and Nick team up

While Nick is at the Newman mansion, Victor (Eric Braeden) arrives and tells him he is not welcome there. Nick says maybe he does not want to learn the news about J.T., which catches his father's attention. They snark about it and how it is a major concern for Victoria.

Sharon takes Victoria to the breakroom, leaving Nick and Victor to talk. Sharon asks Vikki what would happen if J.T. is indeed alive, but Vikki insists it was not him. Sharon is unconvinced. When they rejoin Nick and Victor back in Vikki's office, the father and son put their differences aside and agree to join forces to find J.T.

Just then, Abby (Melissa Ordway) arrives to inform them about Pat Harvey's news report about Victor's leaked medical files. They show that Victor is suffering from a serious illness, which is nothing but bad news for the Newman Enterprises.

Victor says the report is outrageous but he admits to his family [VIDEO] that he is seeing a specialist. Who could be behind the leak? Victor suspects it's none other than J.T. He says Vikki's ex-fiance is the only one who could have accessed his medical files.

Later on, Ashley (Eileen Davidson) also warns Victoria about J.T. "The Young and the Restless" spoilers say that Ashley informs Victoria about some eyewitnesses and a description of a man that matches J.T.

Dina confirms who Jack's father is

Elsewhere, Jack (Peter Bergman) continues his quest [VIDEO] to find out who his real biological father is, and this week, he gets to the end of the search. "The Young and the Restless" spoilers tease that Jill (Jess Walton) has refused his request to dig up Phillip Chancellor's body, and he figures it was because Cane (Daniel Goddard) has got to her.

Jack tells Kyle (Michael Mealor) he might just dig the body himself, but his son advises against it.

Instead, Dina (Marla Adams) appears and Jack shows her the photo. Dina examines the photo and confirms, "That's him, Jackie. That's your father." With lingering doubts, given Dina's condition, Jack asks more questions. Fortunately, Dina confirms again that Phillip Chancellor is Jack's father.

"The Young and the Restless" airs on weekdays at 12:30 PM ET on CBS.