who → Regulus Black, Marius Lestrange, Lucius Malfoy,& Severus Snape.
what → They go on their mission to poison the water reservoir in response to the Minister's refusal to step down at Lord Voldemort's ultimatum.
when → Thursday, 24 July 1979; 11:00pm.
where → Malfoy Manor --> Tinworth.
warnings → None.
status → Complete.
( Here we go a-poisoning... )