The film's core elements are firmly entrenched in the documentary genre. Regardless, few can deny the mourning and mortality on display here aren't the real thing.

Another example of a documentary being filled with emotion. But this time in a rather unexpected place.

The real-life stakes serve to send the blood pressure sky-high and, despite knowing how the tale ends, you'll find yourself on the edge of your seat.

[Director Jonah] Malak keeps the pace and the tone of the movie consistently on the passion for deep-water diving, but Dave Not Coming Back is also a cautionary tale of how someone's life can be cruelly taken away during this high-risk activity.