Grieving mother says her 'world stopped' when her 'happy' son, 14, was stabbed to death in a park by baby-faced killer who boasted 'I wetted your boy'
Kamila Wisniewska was left heartbroken when her 'happy and beloved' son Tomasz Oleszak (pictured), 14, was killed in October last year by knife-wielding Leighton Amies, 14, in Gateshead.