The Boy Next Door (2010)

Synopsis: World-renowned murder-mystery writer Sara Wylde travels to the small town of Christina Lake in search of inspiration to write her next novel. Sara gets more than she bargained for when she meets her neighbor, a young, handsome and wealthy man who quickly becomes her muse. Her novel develops effortlessly as she spies on him from her upstairs window each night. But when the man mysteriously turns up dead, Sara becomes the lead suspect in his murder case. Now, she must not only prove that she is innocent, but she must also try to discover the real killer before she becomes the next victim.     Source: Amazon.com