Eric is back on the job. When Lucy dies of sudden poisoning, the first suspect is her fiancé Ethan Durant. While the team traces her fatal e. coli infection to the greens supplier, Sheldon Parks's firm, Ethan enters a toxic coma himself, but his germ terms out to be botulism. Jesse's field team has to use alternative methods to work out the infection, absent from the fields, stems from irrigation water. Horatio tackles Jerry Mackey's pseudo-bio company, which controls Parks.
—KGF Vissers