Mark Alpert is a contributing editor at Scientific American and the author of several science-oriented thrillers for adults: Final Theory, The Omega Theory, Extinction, The Furies, and The Orion Plan. The Six was his first science thriller for young adults. He lives with his wife and two teenage kids in New York City.
Todd McLaren was involved in radio for more than twenty years in cities on both coasts. He left broadcasting for a full-time career in voice-overs, where he has been heard on more than 5,000 TV and radio commercials, as well as TV promos, narrations for documentaries on such networks as A&E and the History Channel, and films.