Psychological thrillers are one of the genres which most commonly deal with obsession. Some exceptional films take audiences into the mind of a character ... Elster's death just as perplexing ...

When Cassie's new boyfriend ghosts her for fitness instructor Summer, she quickly becomes entranced with the seemingly perfect trainer, taking obsession to a deadly level. Now, it's a fight for ...

The season also saw the adult characters getting fewer in number, with Van's tragic death at Melissa's hand ... is still after them, and her obsession even led the group to follow her on violent ...