He was pleased with the direction that show runner Manny Coto took "Enterprise" in during its fourth season. Sussman and Coto would bounce ideas off each other with the intention of taking the show more in the direction of "The Original Series". He also advocated for "Star Trek" novelists Judith and Garfield Reeves-Stevens to be added to the writing team. He also suggested the closing montage scene in the "Enterprise" finale "These Are the Voyages..." which showed all the main ships from the various "Star Trek" series. Sussman has been credited with writing over 30 "Star Trek" episodes. Post-"Star Trek", he has worked on television series "Threshold" and Sam Raimi's "Legend of the Seeker". He since produced "Perception" for TNT alongside Biller. Later, Sussman went on to write and produce the SyFy Channel series, "12 Monkeys"; and "The Last Ship" from Executive Producer Michael Bay and TNT Originals.