You're Dead to Me, Reed Walker

Tessa Sinclair is a winner. Winner of spelling bees, science fairs, and scholarships. So when she finds herself unexpectedly dead after a graduation party in an abandoned mansion, she's none too pleased. What's worse, her Harvard-bound, Mr. Perfect academic rival, Reed Walker, is there too - deceased, smug, and annoying as hell. Being a ghost is hard enough, but it's a thousand times worse having to haunt the same house as your nemesis. But as Tessa and Reed retreat to RIP in their respective corners of the mansion, a mystery unfurls about the exact cause of their deaths. Though they'd rather die (again) than work together, they'll need to overcome their differences to hunt down a murderer on the loose. And should they happen to fall for each other along the way...Who ever said you can't find love after death?