Martha Beck, an obese nurse who is desperately lonely, joins a "correspondence club" and finds a romantic pen pal in Ray Fernandez. Martha falls hard for Ray, and is intent on sticking with him even when she discovers he's a con man who seduces lonely single women, kills them and then takes their money. She poses as Ray's sister and joins Ray on a wild killing spree, fueled by her lingering concern that Ray will leave her for one of his marks.

The followers of a charismatic cult leader set out to murder a pregnant actress.

Driven by desire and desperate for self-love, Coral and Nicolás will abandon their past lives in a journey surrounded by murder.

A couple plots to murder a random stranger just for the thrill of it, but things turn ugly when one of them decides not to go through with it.

Emma and Leo are two siblings who live alone, she just wants to be free and plans to go out to a party secretly, but when Leo finds out, he will take his overprotection to unimaginable levels.