Tyler (Davis) and his older sister Leslie (Valerie) grew up in Milwaukee. After changing their names and starting a new life, they claimed to be from Detroit, that their mother died when they were children, and that they were raised by an abusive father.
Leslie grew up to work as a legal associate with the high profile California attorney Vance Abrams. Leslie occasionally accompanied Vance to Genoa City when he was representing Victor Newman, and she later represented Victor others when Vance was unavailable.
Tyler received a graphic design degree in Los Angeles, and worked in San Francisco.
After Neil Winters accepted the CEO position at Jabot Cosmetics from Jack Abbott, he hired his daughter Lily as head of the Jabot marketing team, made Cane his right hand man, and hired his adopted son Devon as a marketing intern. He then asked Leslie to become Jabot's chief legal advisor. She initially turned down the position due to their prior romantic relationship, but after assuring each other that it would be strictly business, Leslie accepted the job.
Leslie's younger brother, Tyler arrived in town, and wanting to work at Jabot, he made a pitch to Neil and Jack. Tyler was full of innovative new ideas like a competition to create Jabot sand sculptures, chalk on pavement, and ice sculptures, to create art flash mob images that would disappear, but saved on video. Neil was impressed and Tyler was hired to work for Cane, who was jealous because Tyler continued to openly flirt with Lily.
Jabot owner, Jack, fired Neil and made Cane acting CEO. His first task was to fire Tyler, but Lily later convinced Cane to give Tyler another shot. Leslie guessed and admired Neil for overcoming his alcoholic past, and now that they were no longer working for the same company, they fulfilled their sexual desire for each other.
Leslie and Tyler admitted to each other that they shared a past that a background check would easily expose, which was why they hadnít gotten involved with anyone seriously. Leslie cautioned Tyler to stay away from Lily who was happily married with twins.
Leslie spotted Congressman Wheeler and cautioned Tyler that he was in town, reminding him that he may recognize them from twelve years ago. Tyler pushed the envelope by engaging the Congressman in conversation but was not recognized. But when Wheeler ran into Leslie at Jabot on his way to meet with Jack, and called her "Valerie", she took him aside and asked him to call her Leslie, saying that she and her brother "Davis" had changed their names to escape their past. Wheeler agreed that it had been a good move.
Tyler and Lily became trapped in an elevator together, and Tyler being claustrophobic, began to have a panic attack. Tyler explained that as a little kid he had seen something he shouldn't have, and had been so afraid that he stayed hidden and made up games to get through it. So Lily fantasized that they were in a starship racing through the galaxy. When elevator lurched Lily told him that they were just shifting into warp speed. The elevator eventually moved again and they got out. Tyler thanked her for virtually saving his life. On Valentine's Day 2013 Lily and Tyler found themselves marooned inside a dead car in a snowstorm, but Cane found and rescued them. Cane got very jealous and accused Lily of fooling around on him. The next time Tyler came on to Lily, she set him straight that they were merely co-workers, and told him to stop.
As time went by, and through various encounters with Wheeler, it came out that Leslie and Tyler's mother, Belinda, had been a campaign worker for Congressman Wheeler and had been murdered. Leslie had testified that she had walked in on her father Gus kneeling over her mother's body. Wheeler's testimony had also helped to Gus in prison for the past twelve years. Gus had a criminal past, and had turned state's evidence on his cohorts to get a lighter sentence. Avery Bailey Clark was working on an appeal for the Innocence Foundation to prove Gus innocent and free him. When Victor failed to get Avery to drop the case, Wheeler went to her and offered to help, saying that if Gus went free it would be bad for Wheeler's credibility, but Avery rejected his help. Wheeler began trying to talk Leslie and Tyler into testifying, warning them that if the man was ever freed, they would all be looking over their shoulders for the rest of their lives. Leslie eventually broke down and admitted the truth to Neil about her past, adding that she and Tyler had changed their names as teenagers when they went to California to live with an aunt. Neil later stopped Leslie from leaving town after receiving a call on her cell phone from Gus, and talked her into going to see Gus in prison. Gus told Leslie his side of what had happened, admitting that he had always been drunk and rough with her mother, and that he had confronted her that day about her having an affair. But he swore he did not kill Belinda, and had only just found her after having been attacked and near death when Leslie walked in. Looking in his eyes, Leslie believed him, but Tyler could not be convinced that it was true, even after he went to visit their father himself.
Gus Rogan's hearing was held, Leslie testified for Gus, and Tyler testified against him. Awaiting the verdict, Lily reduced Tyler to tears getting him to remember the good parts of his childhood, and tried to convince him to entertain the possibility that Gus might actually be innocent. Of course Cane walked in just as they hugged. Tyler surprised everyone when he brought Gus home from Milwaukee, and Leslie invited Gus to live in her apartment with her. But Tyler walked out on what appeared to be a happy family brunch, and went back to work. Sharing his mixed feelings for his father with Lily, he kissed her. Lily got into it, then broke it off, excusing him because he was drunk. Lily told Tyler that it was never to happen again. Tyler admitted he cared for Lily, and that she was the only person he could trust. Not long afterward, Gus suffered a heart attack, and Tyler realized he may not have that much time to make peace with his father.
Lily came up with a Jabot Face of Fashion marketing campaign called "Dare to be Different" for Chelsea's designs using unknown models, and it was approved with Lily working with Tyler. Tyler suggested Summer Newman as their model. Chelsea forgave Summer for the death of her unborn child, saying that they were both getting a second chance. Tyler offered Mason Wilder a modeling job. All were impressed with the test shoot with Mason and Summer.
Gus awoke in the hospital after his heart attack, saying, "I'm so sorry, Rose." When Leslie questioned him about it, Gus claimed he knew no one by that name and that Leslie must have misheard. Leslie became convinced that the small cardboard box Gus had brought with him from prison contained his secrets. Inside she found a pack of letters sent to Gus in prison from an R. Turner, in Chicago. After reading the letters where Rose said she loved him, Leslie confronted Gus, who swore he had never been unfaithful to their mother. Gus admitted that he had been with Rose because she needed him at the time their mother was killed. Tyler took his side, telling Leslie to cut him a break. Gus became agitated trying to explain about Rose, had another heart attack, and died.