Cal Doyle and novelist Eimear Ryan (Hoiding Her Breath) with Tadhg Coakley at the book signing. ECHO request by Grainne McGuinness: Author Tadhg Coakley in Waterstones on Patrick Street signing copies of his new novel "Before He Kills Again", part 2 of the Detective Garda Tim Collins series of crime books. Pic Larry Cummins