Secret Admirer (Fear Street Series #36) by R. L. Stine

A young actress draws a sinister spotlight in this spooky installment in R.l. Stine's bestselling Fear Street series- now with a fresh new look! Selena has it all. She just scored the lead in her high school play, and everyone adores her. So when she starts receiving dead flowers from a secret ""admirer"" named The Sun, she just assumes it's a harmless fan. But Selena soon realizes that The Sun is serious...dead serious. First, her understudy is injured in a suspicious accident. Then, a speeding car almost kills her! Selena doesn't know what this psycho wants. All she knows is that her number-one fan has become her number-one nightmare.