Last Week on "Map of the World"

Carey and Samantha become the victims of a mysterious vandal who hurls a blunt object through Carey's living room window while they discussed Samantha's suspicions of Cameron's cheating on her with another woman. In the aftermath of the blast, Samantha has been left unconscious. Whilst Carey slowly comes to, she is not aware that there has been a fire growing on the stove in her kitchen just before the blast...

While walking through the park, Tracy learns from Cameron himself that he has been seeing Samantha and has been engaged to her for a short while. News to Tracy, as she believed Cameron to be with her exclusively. An emotional wreak, she races home alone enraged and destroys her most recent painting which she had planned to give Cameron as a birthday gift. Tracy herself has a secret, but decided not to tell Cameron. It's a secret that can't be kept long.

Then, Tracy receives an urgent call from Trevor's father requesting to pay her a visit. (Trevor is a new friend of Tracy's, working with her at the small art gallery nearby) She is somewhat off-put by his request as she does not know his father all that well. Whilst waiting for him to arrive, Tracy receives a visit from her fraternal twin sister Jackie. Tracy is completely shocked to see Jackie because Tracy's father had told her that she had drown in a boating accident two years earlier when away at boarding school. Although Tracy herself has just staged her own death, with the help of her father and the international news media, she is overwhelmed with shock and collapses in the living room with Jackie by her side...

In the same park earlier conducting research for his father, Trevor overheard the argument between Cameron and Tracy and decided to move in closer to get a better listen. When he sees Tracy come into his view, he ducks, hoping to remain just an eavesdropper. As he moves to gain cover, Trevor starts to feel a sharp pain in his hand that causes him to yell out loud and blow his own cover. The pain is strong enough to cause Trevor to faint.

Cameron hears the cry of pain in the distance and he makes his way over to the sound to deliver help. Cameron decides to pull his pocket knife for his own protection. As he gets closer, Cameron is shocked to to see Trevor laying unconscious under a tree. Cameron drops the knife and runs to get help. On the way, he meets two young schoolgirls who are willing to assist him in finding help, or so he thinks...

While all of this was happening in the park, a mysterious man with a camera has been taking pictures of what has been happening and watching the whole story unfold from atop a high hill some distance away from it all. As Cameron leaves the scene to search for help, the cameraman makes his way over to Trevor to get a photo of him. However, the cameraman doesn't notice Trevor suddenly come to and start to make his way out of Mayberry Park as he looks around to make sure that he can't be seen. Trevor, still dazed, doesn't notice that he's left his lab samples under the tree in the grass. Not good, as the mysterious cameraman is bound to find the samples....

Who is he and why is he taking pictures? What would he do with the samples if he had them for himself?!