In 2009, Mawer published "The Glass Room", a novel about a modernist villa built in a Czech city. His 2012 book "The Girl Who Fell from the Sky" was received positively on both sides of the Atlantic, described as "a professionally crafted and engaging story" and a "skillfully and intelligently executed thriller". In 2015 he published "Tightrope", a follow-on novel from "The Girl Who Fell from the Sky." "Tightrope" has been described as "...skillful and evocative examination of a mind under stress. Most recently, he wrote "Prague Spring" (2018) about Brits living in and travelling through Czechoslovakia during both the Prague Spring and subsequent Warsaw Pact invasion.