In 2010 four bodies, all evenly spaced, were discovered in a bramble alongside a highway in Suffolk County. All four women were petite, in their twenties, had come from out of town to work as escorts, and all had advertised on Craigslist and its competitor, Backpage. Kolker examines the underside of the internet, and the secrets we keep even from ourselves. This updated edition includes an afterword with the latest developments in the case.