In Harry Potter and the Goblet of Fire, Severus Snape threatens Harry (as he often does) when he suspects him of stealing supplies from his storeroom. This is when Veritaserum is first introduced — or ‘Truth Potion,’ as Snape describes it:
In Harry Potter and the Goblet of Fire, Severus Snape threatens Harry (as he often does) when he suspects him of stealing supplies from his storeroom. This is when Veritaserum is first introduced — or ‘Truth Potion,’ as Snape describes it: