starts tonight (friday) 9pm ITV
3 parter about two friends - Serena and Poppy who were teenagers in 1995
Serena was seeing their teacher Marcus who then gets murdered
Poppy serves 17years and is now released though said she didnt do it
Serena acquitted and hasnt told anyone including hubby her past
Be interesting if story follows the book - unlike Crickly hall which changed things :(