Matthew Crusoe

Matthew Crusoe, known to his best friend and co. as Matt, is a lonely young boy who has runaway from home and gone to Lake Juliet to search for his missing father. While he is there he steals the possessions and gets caught in the act of stealing resort food by Ashley Mizuki Robins, a teenage girl, who was invited to the lake her estranged father. After Ashley and Matthew both learn of each other's circumstances for being at the resort, the two begin to form a mutual effort to help each other reach the truth of their mysteries. Over the course of their adventures together, a strong friendship forms between the two, and Ashley becomes Matthew's first ever best friend.

Truth behind his father
Ashley eventually helps Matthew uncover the truth behind his father's "disappearance", namely, that his father was involved in a conspiracy surrounding his development resort and pollution Lake Juliet. Matt's father was, one night several years ago, witnessed falling from the bell tower; whether it was an accident, murder, or suicide is unknown, but his body was never found. At the end of of the time, Matthew is, therefore, still convinced that his father could be alive.

"Killing" his sister
Ashley also uncovers the truth surrounding Matthew's sister, Kelly: Matthew always found his little sister annoying, and one day when was looking after Kelly, he "playfully" shoved her when she tried to show him her beloved bunny doll. This shove sent her into the lake, where, despite Matthew's efforts to pull her back out, she drowned. Matthew's guilt caused him to subconsciously repress these memories, and Matthew's family pretended that Kelly was alive, and was living away from Matthew. Matthew--with Ashley--momentarily encounter Kelly's spirit at Lake Juliet, who has been wandering as a lost spirit. Matthew gives her her bunny doll, which causing Kelly's spirit to evaporate, while echoing out a final, ghostly, "thank you". Ashley tells Matthew that his sister's spirit has likely now found peace, and thus, has been able to fully pass on.