November, Catterfeld filmed the RTL television film Das Geheimnis des Königssees, a thriller inspired by English author Daphne du Maurier's 1938 novel Rebecca. The film was not released until 2008. In 2007, she co-starred with Stephan Luca in the romantic comedy Wenn Liebe doch so einfach wär. The television film garnered strong ratings upon its premiere, but received mixed to negative reviews from critics. The same year, Catterfeld made a cameo appearance as herself in Til Schweiger's Rabbit Without Ears, which became a surprise box-office hit and has since ranked among the most successful German films in Germany since the beginning of the audience census in 1968. In 2008, Catterfeld had a supporting role in comedy film U-900, a big screen parody of Wolfgang Petersen's epic war film Das Boot (1981). The satire was universally panned by critics. 2009–2013 Catterfeld's first project of 2009 was the police thriller Schatten der Gerechtigkeit co-starring Richy Müller. The film was well received by critics. , a two-part disaster film about volcanic caldera lake Laacher See, was broadcast to generally mixed reviews from critics. It was awarded a German Television Award the following year. Engel sucht Liebe, a Christmas comedy film, inspired by Wim Wenders's Wings of Desire (1987), was broadcast to moderate ratings. Also in 2009, Catterfeld had a minor role in Lilly the Witch: The Dragon and the Magic Book, a children's film directed by Stefan Ruzowitzky, and again played herself in Til Schweiger's Rabbit Without Ears 2. Because of her resemblance to actress Romy Schneider, she had also been cast to play the title role in the Warner Bros. film Eine Frau wie Romy. The project was cancelled in July 2009. In March 2010, Catterfeld released her fifth album Blau im Blau on Columbia Records. Taking Catterfeld's work further toward an adult audience, it was recorded with smaller group of musicians. A moderate commercial success, Blau im Blau reached number 37 on the German Albums Chart. Its same-title lead single, the only track lifted from the album, failed to peak within the top fifty of the German Singles Chart. Also in 2010, Catterfeld appeared in the Sat.1 television film Die Frau des Schläfers, in which she played a call centre operator, whose son is abducted by his Iran father. The drama was broadcast to strong ratings. Catterfeld portrayed a soap opera actress in Dani Levy's comedy film , which received a