J. A. Darke 
Fade to Black [PDF ebook] 

Mila Chun wishes she knew what to say to the boy she likes, but she’s too shy. So when her best friend, Junie Weid, hands her a script detailing how to converse with him, Mila is relieved. However, it doesn’t take long before Mila feels like she’s acting in a TV show and decides to ditch her lines. After abandoning the script, Mila experiences strange things. Flashes of light and people laughing in the background, big chunks of her time that go unaccounted for and looming faces that seem to be staring down at her from above. Can Mila figure out what kind of sinister force has taken over her life before the scene fades to black?