Sex is implied once but not shown. No nudity either.

Young men are seen frequently only wearing their shorts. A number of scenes where a young man undresses or stands around partially-naked, though only his chest and legs are visible.

A young couple kiss. They are in beachwear and the man is bare chested.

It is suggested a young couple have sex in a boat cabin, though their efforts are disrupted. The most obvious reference offcurs when they are seen without clothes, whereas previously they had been fully clothed (the woman shields her breasts with a towel/jumper held close to her chest). It's also implied another young man was trying to watch/listen.

A young man is seen in his underpants. There is a close-up of his crotch area as he walks towards the screen (with some brief outline detail) though this is not overtly sexual.

A character is stabbed. There's no blood but you see the knife stuck on his chest as he moans, falls down and eventually dies.

Very mild.

Occasional drinking.

After the murders, the main character gets rid of the bodies in two extended sequences. The first body is wrapped and thrown into the sea and the second is carried out of a building and ditched in a nearby pit.