Unhinged Friend

Psychological Thriller • Drama • Mystery

Two friends and an accident that will change everything.

When Cecilia meets Anne, the connection is instant. What begins as friendship quickly turns obsessive, blurring the line between affection and control.

Anne is magnetic and unpredictable. One moment, she pulls Cecilia close – making her feel seen and necessary. The next, she turns distant, leaving Cecilia questioning reality itself.

Then, one night, Anne calls, saying she’s going to end her life. Cecilia runs to save her – and is hit by a car before she ever gets there.

When Cecilia wakes up, nothing aligns. Her parents, once inseparable, now inhabit a silence thick with the unspoken. Her father watches her as if she’s a stranger in her own skin, while her mother insists, with terrifying calm, that nothing is wrong.

What readers are saying

“If you love a book that hooks you from the very first page… The pacing wastes no time, pulling you straight into a twist-filled psychological thriller that’s nearly impossible to put down.”

— Goodreads ★★★★★

“An intense and enjoyable narrative about a psychological tug of war between friends. Both friends think that the other is unhinged. Paranoia and vulnerability ooze from the characters.”

— Goodreads ★★★★★

“Their friendship felt intense, emotional, and honestly a little unsettling… The author did a great job showing obsession, vulnerability, and paranoia without making the characters feel unrealistic.”

— Goodreads ★★★★★

Product Details

Publication Year

2026 (Paperback) • 2026 (eBook)

Paperback ISBN

978-6502005460

eBook ISBN

978-6502005477

Print Length

264 pages (Paperback) • 266 pages (eBook)

Language

English (Translated from the original Portuguese edition)

* Originally published in Brazil as Amiga insana .