Originally developed as a television series by book packaging company Alloy Entertainment, the idea was described as "Desperate Housewives for teens. " Alloy met with author Shepard and gave her the property to develop into a book series. With Alloy and Warner Horizon Television interested in producing Pretty Little Liars as a television series for years, it was first planned for The WB in 2005 with a different writer until the network shut down in early 2006 and reestablished as The CW later that year. The first novel was published by HarperTeen in October 2006. In June 2008, Alloy noted that it was developing a Pretty Little Liars television pilot for ABC Family, with the novels adapted for television. After the pilot was shot in Vancouver in December 2009, filming for the rest of the series moved to Los Angeles. The series was primarily filmed at the Warner Bros. studio and backlot in the city of Burbank, near Los Angeles. In June 2012, the series was selected by lottery for a California film and TV tax credit.