Nurse killed 20 people at end of shift to avoid telling kin
A Japanese nurse has admitted to poisoning over 20 patients in a way that they didn't die during her shift, in order to avoid the "nuisance" of informing their families. Ayumi Kuboki allegedly killed her victims by injecting their IVs with a disinfectant containing benzalkonium chloride. "It was troublesome and difficult having to explain to their family members," she said.