In 2015, Lass had a starring role as Anne in the Urmas Eero Liiv directed thriller "Must alpinist" for Kopli Kinokompanii. The film is based on a 1989 incident involving director Urmas Eero Liiv and partly filmed in the Buryat village of Kyren where it allegedly took place. It also bears some resemblance to the Dyatlov Pass incident of 2 February 1959, where nine ski hikers mysteriously died in the northern Ural Mountains after establishing a camp on the slopes of Kholat Syakhl. In 2018, she appeared as Moonika, a young mother who abandons her newborn infant to the care of her ex-boyfriend, in the Liina Triškina-Vanhatalo-directed Allfilm drama "Võta või jäta".