Alison , Jason , Hanna , and Spencer later discover Charles ' grave in her backyard .
The Liars then searched Radley for answers , discovering that there was another person who visited Charles in Radley : Alison 's great aunt Carol .
Alison , Jason , Hanna , and Spencer later discover Charles ' grave in Alison 's backyard .
The Liars then searched Radley for answers , discovering that there was another person who visited Charles in Radley : Alison 's great aunt Carol .