The Cork native's new book will be published on October 4 and is described as "a twisted tale of secrets and ill-fated loves that once again demonstrates Norton's understanding of human nature and all its darkest flaws."
The chat show host and novelist will tour Ireland and the UK, and will give public interviews at The Helix in Dublin on October 13 and The Cork Opera House on October 14.
"I'm excited to announce I’ll be hitting the road in the autumn with my new novel A Keeper." Norton said.
RTÉ broadcaster and book club curator Rick O’Shea will talk to Norton about A Keeper, followed by an audience Q&A.
It was reported in late 2016 that Holding, which was about a murder in the fictional Co. Cork town, Duneen, will be produced for television by the former boss of EastEnders, Dominic Treadwell-Collins.
At the time, Norton confirmed that it has bought the rights to the novel to turn it into a TV series.
Holding won impressive reviews and made it to No 1 on the UK and Ireland's best sellers lists.