Question: How many children does this novel by Stephen King center around that along with "Insomnia" and "Dreamcatcher" takes place in a fictional town Derry, Maine?
Sentence (from "Jerusalem's Lot (Stephen King)"): 'Salem's Lot first appeared in King's 1975 novel "'Salem's Lot", and has reappeared as late as his 2013 novel "Doctor Sleep" (see list below).
Relevant evidence: No