This long-awaited second book in John Scalzi's 'Lock In' series is a murder mystery set in a robot fighting league. And yes, it's worth the wait. Years back, John Scalzi released the novella Unlocked: An Oral History of Haden’s Syndrome, which detailed-- in the oral history format contemporaneously brought into fashion by World War Z -- the onset of … Continue reading Review: Head On by John Scalzi