LD50 was released in the year 2003。LD50 is also called as LD 50 Lethal Dose, Lethal Dose, Injection fatale。

Re-formed by a coded message to their web site, a group of animal rights activists set off to free an imprisoned colleague from a terrifying ordeal. Their rescue mission leads them to a disused lab, but what should have been a simple raid turns into a series of twisted and mind bending incidents where the free and the caged switch places, in this tormented psychological horror.

LD50 actors and actresses include Katharine Towne, Philip Winchester, Xanthe Elbrick。