The hilarious international bestselling novel that has had pensioners ditching their sticks and zimmers to follow the age-defying, youth inducing antics inside The Secret Diary of Hendrik Groen, 83 1/4 Years Old . . . Terrific. This geriatric Adrian Mole made me laugh Woman and Home Funny and touching BBC Radio 4 Meet Hendrik Groen. An octogenarian in a care home who has no intention of doing what he's told, or dying quietly. To that end, he creates the Old-But-Not-Dead Club and with his fellow members sets about living his final years with careless abandon.