British journalist John Follain undertook extensive interviews to inform his book, "City of Secrets: The Truth behind the murders at the Vatican" (2006). Follain dismisses speculation that Estermann, his wife, and Tornay were murdered by an external fourth party or that Estermann was a spy for the former East German government. Follain's research indicated that Cédric Tornay did indeed kill his commander, and his commander's wife before turning the gun on himself. Reportedly Tornay found the running of the Swiss Guard archaic, and resented the dominance of the Swiss German majority contingent. According to Follain, Tornay turned to Alois Estermann for affection, and had a short homosexual affair.