Esta novela combina as angustias da adolescencia, horrores indescriptibles e un cóctel de cancións de moda dos oitenta nun thriller sobrenatural de grande intensidade.

Os títulos dos capítulos son os dos temas musicais:
- Don't You (Forget About Me) - Simple Minds
- We Got The Beat - The Go-Go's
- That's What Friends Are For - Dionne Warwick
- Party All the Time - Eddie Murphy
- The Number Of The Beast - Iron Maiden
- Sunday Bloody Sunday - U2
- It's The End Of The World As We Know It (And I Feel Fine) -- R.E.M.
- One Thing Leads To Another - The Fixx
- Parents Just Don't Understand - DJ Jazzy Jeff & The Fresh Prince
- Broken Wings - Mr. Mister
- Paranoimia - The Art of Noise with Max Headroom
- King Of Pain - The Police
- Jenny (8675309) - Tommy Tutone
- Total Eclipse of the Heart (Turn Around) - Bonnie Tyler
- New Sensation - INXS
- Missionary Man - Eurythmics
- Dancing In the Dark - Bruce Springsteen
- She Blinded Me With Science - Thomas Dolby
- Union Of The Snake - Duran Duran
- Like A Prayer - Madonna
- Beds Are Burning - Midnight Oil
- Tonight She Comes - The Cars
- Harden My Heart - Quarterflash
- Don’t Stop 'Til You Get Enough - Michael Jackson
- I Think We're Alone Now - Tiffany
- I Would Die 4 U - Prince
- Fast Car - Tracy Chapman
- And She Was - Talking Heads

Dúas estudiantes de Secundaria, Abby e Gretchen, son amigas dende a infancia. Pero despois dunha noite na que todo lles sae mal, Gretchen cambia... Está sempre de mal humor. E empezan a suceder estranos incidentes nos que Gretchen está implicada. Abby investiga e adéntrase nun misterio sobrecolledor... Cando a historia chegue ao seu momento culminante, será a amizade o bastante forte como para derrotar ao Demo?

3º-4º ESO