The featured guest list on A Lethal Dose of Truth includes Jordan Rudess (Dream Theater), Rob Caggiano (Anthrax, Volbeat), Brendon Small (Dethklok), Andy LaRocque (King Diamond), and Gene Hoglan (Testament), with nearly a dozen other current and former members of Iced Earth, Jag Panzer, Cynic, Helloween, Halford, Chimaira, Death, contributing as well.
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For A Lethal Dose of Truth, Sylencer's album, Johansson produced and called on some of hard rock and metal's most gifted musicians to lend their chops to the recordings.
Scarlett Johansson | Markus Stenz | Markus Schulz | Johan Petter Johansson | Hazel Rose Markus | Frank-Markus Barwasser | Bo Johansson | Paul Johansson | Pär Johansson | Markus Walger | Markus Toivonen | Markus Stockhausen | Markus Persson | Markus Imhoof | Joachim Johansson | Jens Johansson | T. Markus Funk | Ove Johansson | Markus Werner | Markus Selin | Markus Reiner | Markus Paatelainen | Markus Oscarsson | Markus Oehlen | Markus Lanz | Markus Hofmann | Markus Buchart | Ulf Johansson | Tore Johansson | Title page of a biography of '''Isaak Markus Jost''' by Heinrich Zirndorf |