Dorian found out that Todd Manning was the real Lord heir and told Viki. After Viki found out the truth, her alter Jean emerged. Jean forced David to divorce Tina and have nothing to do with her any more, otherwise she'd go to the police. She also forced him to marry Dorian, who despised him. As Dorian's husband, he lived with her and her niece, Kelly Cramer, in her mansion.
Kelly started falling in love with David and wanted him to be her first. Dorian suspected that David would have an affair and just as David and Kelly were in bed, she got in to the room with a photographer to take picture of him committing adultery. She was horrified to find Kelly with him there. Dorian promised David three fourths of her property if he'd leave Kelly alone and divorce her.
Of course she didn't mean to keep that promise. Dorian schemed with her other niece, Blair, a plan in which Blair would lure David into sleeping with her, would cover his eyes and tie him to the bed. After that Dorian switched places with her and slept with her husband while Todd Manning took pictures of them (without seeing Dorian's face) and published it in his paper. David was forced to give Dorian a divorce without getting a thing out of it.
Right after he signed the divorce papers, Dorian told him all about her scheme and the two made love again for the second time. David thought of a way to get back at Dorian by taking her niece's virginity. He lured Kelly, who wasn't in love with him any more, and when he tried to make a pass on her she hit him on the head with a lamp and carried his body to the woods. She was sure he died, but he wasn't dead at all. He returned, kidnapped Kelly and tied her to a bed in Dorian's yacht. He asked Dorian for ransom and went to take care of it but he didn't notice that as he was leaving a fire started on the yacht. Joey Buchanan came to rescue Kelly and before the police could put their hands on David, he hurried and left town with Ex-mayor Liz McNamara.
David gave him to some rich Texas couple, and when Todd found out the child was his, forced David to tell him. Todd got the baby back, saying he was “adopted.” David seized the opportunity and blackmailed Todd into giving him money or he would tell Blair everything. Todd tricked David into meeting him at the waterfront and had the Moroccan police arrest him. David was hauled away, but not before he told Todd what he thought of him.
David knew the only way to get Spencer to leave him alone (and to continue to protect his secret) was to get something equally damaging on Spencer. Convinced that Spencer knew more than he was saying about Margaret Cochran, David pumped Spencer's ex-wife Paige for information, and finally put two and two together and realized that Spencer was connected to Margaret's death. But all he had to go on was supposition, while Spencer finally clued David in on the "truth" -- the man David supposedly killed was Thomas McBain, father of John and Michael. David had been a scared sixteen-year-old when he had been doing a favor for Spencer and had shot blindly, supposedly hitting Thomas McBain. The secret went even further though -- Paige was the doctor in the operating room that night, and Thomas McBain supposedly died on the table because she had been drinking.
However, it was later revealed that Spencer was the one who shot Thomas McBain and then murdered him in the hospital after the operation. Also, the gun David used when he shot at Thomas McBain was filled with blanks, or as David himself put it "I was shooting blanks like Kevin Buchanan". So both David and Paige were innocent after all.
Not knowing that John McBain was learning the truth about his involvement back in Llanview, David headed to Thailand looking for clues on Margaret's disappearance, and was shocked to find Margaret alive and well, but with no memory of her son or her life in Llanview. Before he could get her back to Llanview, John and Natalie showed up looking for him. John saved David from being killed by Denton, a man Truman had hired to follow him, and the four returned to the States -- John was determined to see David pay for his alleged crimes, but also determined to make sure that an innocent man (Todd Manning) didn't die for a crime he didn't commit (the murder of Margaret Cochran). The entirety of Llanview soon knew about David's alleged crime, and he was arrested, but Spencer soon bailed him out of jail. David was all set to flee town when he had a change of heart and plead guilty to Thomas McBain's murder. However, David later learned that Spencer was the one who murdered Thomas McBain, and John ultimately managed to prove it.
After Spencer's trial, David made a quick exit from Llanview, only having a telephone conversation with Dorian on Christmas.
Viki's daughter Jessica was rushed to the hospital as her body rejected her recent liver transplant. When David was determined to be a match to donate part of his liver, he saw his chance; David made a deal with Jessica's father Clint Buchanan to go through with the transplant in exchange for the $10 million he had been promised by Asa. Anxious to save Jessica, Clint reluctantly agreed to the deal, and to not tell Viki. Finding out about the deal, Dorian also promised not to tell Viki, but let David know that she would someday cash in a big favor from him. Later, Viki did find out from Clint. After Viki ended their friendship, David felt guilty as he had grown to respect and admire her, so he returned the money and asked Viki for her forgiveness. Viki forgave him; David shared a somewhat heartfelt goodbye with Dorian, and made yet another quick escape from Llanview. A few weeks passed before Dorian and Viki each got a postcard from David.
On May 7 2008, David is revealed to be an employee at the Bon Jour Café in Paris, Texas, working as a dishwasher. He recalls how a $1 lottery ticket he had received from Viki had first brought him luck, making him a TV star with his own show. But he had lost the ticket during a party at the Playboy Mansion, and his luck had gone with it as his show had been canceled (It is implied that the Writer's Guild of America Strike was caused by David losing his ticket). David had returned to Paris, Texas — where Viki had purchased the ticket — in search of a new source of luck. He finds it in the form of diner patrons Jared and Natalie, whom he learns are not really uncle and niece. David follows them back to Llanview and blackmails them. As they plan to reveal their ruse to the family rather than pay David, Dorian reveals the secret as part of her takeover of Buchanan Enterprises. Jared is arrested, but Natalie secures his freedom by offering Clint his real brother's identity in exchange for dropping the charges against Jared. Clint and Bo reluctantly agree to her terms on 18 June 2008, and are shocked (and suspicious) at the news that David is their brother. Meanwhile, David marries Dorian's sister Addie Cramer to secure his financial future but reluctantly divorces her in exchange for Dorian saving Viki's life. He tries to continue his relationship with Addie, as leverage to force Dorian into relinquishing the renamed Cramer Enterprises back to Clint. However, Addie dumps David, as both marriage AND divorce were part of an eccentric "to do list" that Addie created after being released.
Rex Balsom and Bo Buchanan go back in time to 1968 after being struck by lightning. They meet many people from the past, who resemble characters from 2008. Rex, who represents Bo in 1968, meets David's mother Emma Bradley, and a young Spencer Truman, who resemble Rex's lover Gigi Morasco and her son Shane. Rex, as Bo, sleeps with Emma, possibly changing history. In the present, Bo may be David's father, instead of Asa.