Isaac Lahey Major Character Toggle navigation activity Toggle Dropdown history discuss follow editors rules Toggle Dropdown common by group by name recent nests edit Toggle Dropdown content nests name type refresh children mates references out references in +*children Cards formed by "mating" Isaac Lahey with another card. eg: "Isaac Lahey+mate". +Classes Season 2 English, with Scott and Stiles Chemistry, with Erica, Scott, Stiles, and Lydia French Economics Season 3 Physics, with Scott and... +first appearance 2x01 - Omega +parents Mr. Lahey +played by Daniel Sharman +Season 2 Omega Isaac works for his father at the Beacon Hills Cemetery. He's working late one night digging a grave near Kate ... +Season 3 Tattoo Four months later, one night, Isaac is sprawled out on the streets of Beacon Hills, unconscious and heavily bleeding. ... +siblings Camden Lahey