There is a the rising threat of cyanobacteria (commonly known as blue-green algae) in water bodies throughout Northern New England. Amid this threat, father-daughter filmmakers Jim and Jackie Heltz set out to investigate the possible link between exposure to neurotoxins found in cyanobacteria and the onset of sporadic cases of the terminal disease known as ALS. Follow their exploration in the half-hour documentary Lake Effect.

Lake Effect originally aired on CPTV and CPTV Spirit in October 2018.