Jennifer Brehl at HarperCollins’s William Morrow imprint bought North American rights to Tina Seskis’s novel, One Step Too Far. The amount hasn’t been revealed but is rumored to have been $500,000.

The book was originally published in April as a Kindle e-book that hit #1 on Amazon. Seskis, who grew up in New Hampshire and now lives in London, followed the e-book publication with a paperback release. The print edition then went on to hit the bestseller list of the British bookstore chain, W.H. Smith.