A book which inspired the ITV miniseries "The Secret" has received a sales boost since the final episode aired.
Former journalist Deric Henderson’s book Let This Be Our Secret (Penguin, 2011) and the 2016 edition renamed The Secret (Penguin Ireland) have seen sales rise following television series, which was based on the Coleraine murders in Northern Ireland, in which a dentist Colin Howell and his lover, nursery school teacher Hazel Stewart, were convicted of conspiring to kill their spouses in 1991 and making it look like suicide.
The murders remained a secret for nearly 20 years until Howell confessed to killing his wife and mother of his four children, Lesley, and Stewart’s husband Trevor Buchanan, so the pair could carry out their affair, in 2010. Stewart was found guilty of joint enterprise in the murders in 2011.
ITV’s drama, based on Henderson’s book and starring James Nesbitt as Howell and Genevieve O'Reilly as Stewart, finished airing last Friday (20th May).
Since then the title has received a sales boost, with the first edition increasing 811% to 392 print copies last week and the second edition sales rising 169% week-on-week to 887 print copies sold, according to Nielsen BookScan. Altogether the book has sold 10,684 print copies across both editions.
Henderson is a former editor of the Press Association in Northern Ireland and covered Stewart’s murder trial in 2011.
Howell was sentenced to 21 years in prison and Stewart for 18 years.