THE 5TH WAVE

Mass death is central: most of humanity has died, Cassie's father is killed, and characters face repeated lethal threats.

Some medical recovery scenes and combat injuries are described, though not excessively graphic.

Occasional mild to moderate profanity typical of YA survival fiction.

Cassie's crush and developing romance with Evan are recurring parts of the story but remain secondary to survival and the invasion plot.

Alien invasion, depopulation, human-imitating hunters, constant danger, abduction, betrayal, and children placed in combat create sustained tension.

Very mild romantic intensity; no explicit sexual content.

Minimal or non-existent usage in the context of the apocalypse.

Frequent, serious violence includes shootings, killings, military conflict, attacks, pursuit, and a camp bombing. Violence is largely realistic within the science-fiction setting.