Bigfoot sightings have been reported in every state except Hawaii. Interest in this creature, which many believe to be as mythical as a leprechaun, is as strong today as ever, with the wildly popular show Finding Bigfoot persisting on the Animal Planet network and references to bigfoot appearing throughout popular culture. What is it about bigfoot that causes some people to devote a chunk of their lives to finding one?

In Monster Trek, Joe Gisondi brings to life the celebrities in bigfoot culture: people such as Matt Moneymaker, Jeff Meldrum, and Cliff Barackman, who...