R.L. Stine 
College Weekend [EPUB ebook] 

Nothing can ruin Tina Rivers big weekend at Patterson College with her boyfriend, Josh. Shes so excited, she doesnt even mind that her cousin, Holly, will be tagging along. But when Tina and Holly arrive, Josh is gone. His roommate, Christopher, says Josh is stuck in the mountains, delayed by car trouble. Thats weird Josh never mentioned he was going away. It gets even weirder when Holly suddenly disappears. But Christopher isnt worried about Holly or Josh. In fact, Christopher seems to have the answer to everything. Tina isnt sure whats going on, but one thing is clear: shes about to learn more about love and murder than she ever wanted to know.