"Corpse Mania" is a Hong Kong giallo. As such, it features a masked killer, blood like red paint, and stylish photography.
Unfortunately, and typically for HK genre flicks, this one also features a hard-to-follow plot, murky characterisation and too much dialogue. The only times it really got my attention were particularly well photographed moments using light and shadow. At times, it's like a photography book come to life.
The movie is called "Corpse Mania" presumably as a reference to its killer's necrophilia. There is only one scene of this, which is nowhere near as repulsive as it could have been, mostly because the "corpse" in the scene is clearly an actress pretending to be dead.
Also, like apparently all HK horror flicks, this one features an abundance of creepy crawlies. At least in this case they don't spew forth from people's mouths like they did in "Seeding of a Ghost" and "Centipede Demon".