Adam Gerrick was a Grayson citizen and engineer.

He developed a plan to use crystoplast, a material new to Grayson after its treaty with the Star Kingdom of Manticore, to enclose cities and farmland protecting them from the toxic Grayson environment. At Steadholder Honor Harrington's suggestion, he resigned from his position in his steading to become chief engineer and development officer of Grayson Sky Domes, Ltd. He received a salary plus a thirty percent interest in the company. (HH4)

He was present when the dome under construction at the Winston Mueller Middle School in Mueller Steading collapsed. He then led the team that analyzed how the tragedy occurred and flew to GNS Terrible to inform Harrington of how the dome was sabotaged by William Fitzclarence, Steadholder Burdette. On the trip down from the vessel, he was killed when Harrington's pinnace was shot down, at Burdette's orders, on landing approach in Harrington Steading.

He left behind at least one wife and two children. (HH5)