Tadhg Coakley signs a a copy of his latest book for Katie O'Donoghue, author and illustrator (The Little Otter who Tried) 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