Square. In its first season, The Insider originally maintained a news-heavy format, making way for a direction where subjects such as a pair of anorexic nervosa twin sisters from Australia (who died in an April 2012 house fire) were regularly featured in sweeps periods, along with other fringe stories such as true crime stories and the Nadya Suleman story, which had little or nothing to do with the entertainment industry. O'Brien – who was originally co-host of syndication competitor Access Hollywood from 1997 to 2004 – remained co-host of The Insider until March 5, 2008, when he was replaced with Donny Osmond. O'Brien returned to the program one month later after Osmond declined to take on a role as a permanent host. During the first four years she was on the program, Spencer hosted the program solo at times due to O'Brien's varied personal problems, which forced him to take time off in extended periods to address them. The original theme song – which was changed after the second season, coincided with a change in distributors to CBS Paramount Domestic Television after CBS assumed ownership of Viacom's television production and syndication operations in their December 2005 split – was performed by Richie Sambora. For its fourth season, production of the program was moved to New York City full-time in September 2007. O'Brien relocated from Los Angeles to join Spencer in a new studio based within the Minskoff Theatre in Manhattan (where the musical adaptation of The Lion King is based), which featured unobstructed views of Times Square, nearby the MTV studio facilities and also within One Astor Plaza. On September 8, 2008, The Insider began broadcasting in high-definition television; concurrently, The Insider relocated primary production and studio operations back to Los Angeles, joining sister program ET at Stage 4 at the CBS Studio Center, one of the final steps involving the incorporation of Paramount's former syndication arm, Paramount Domestic Television, into CBS' distribution arms following the earlier CBS-Viacom split and the adoption of the then-new CBS Television Distribution name. The set's focal point was a large life-size 3D construction of the program's logo, which was formerly used as the main portion of the set where segments took place until the September 2009 retooling of the program to incorporate a panel format. The New York-based aspect of the program was also abandoned, with Spencer relocating to Los Angeles and becoming a