Remember this? Scientists are now beginning to unlock the secrets of cockroach zombification:

Researchers have worked out the neurological trick used by a species of wasp to turn cockroaches into ‘zombie slaves’. The discovery explains why, once stung, cockroaches can be led by a much smaller master towards certain death. Researchers have proven their theory by replicating the effect, and by using an antidote injection to release the cockroaches from their zombie state.