Lark (libro en inglés) - Anthony Mcgowan

Things are tense at home for Nicky and Kenny. Their mum's coming to visit and it will be the first time they've seen her in years. A lot has changed since they were little and Nicky's not so sure he's ready to see her again. When they head for a trek across the moors to take their minds off everything, a series of unforeseen circumstances leaves the brothers in a vulnerable and very dangerous position. There might even be a chance that this time not everyone will make it home alive... Particularly suitable for struggling, reluctant, or dyslexic readers aged 13+.