Coming from a confused premise, Killer Mermaids is an empty affair that lacks subplot and character arc.
With its retro-sleaze appeal and synth score, it perfectly emulates the gritty atmospheres of exploitation shockers such as Maniac.
A ludicrous blending of musical comedy with slasher flick that sets itself up as an over-the-top, camp romp, but sadly never quite nails it.
Tries to pass itself off as self-aware, but in the end it is, disappointingly, a rather vacuous and plodding mess.
The body count is huge, the dialogue abysmal, the story perfunctory at best, yet the enthusiasm ensures it's never tiresome.
Incredibly fun with some fantastic gore, but falls just short of its own expectations.