There’s a reason IT: Welcome To Derry’s surprise episode slipped under the radar

Appearing when his victims least expect it (or should that be “least expect It?”) is one of Pennywise The Dancing Clown’s most horrifying tricks. So you might say HBO’s IT: Welcome To Derry was just trying to emulate its legendary monster when it dropped a surprise half-hour episode on Halloween. Except there’s no reason to be scared of the one-off flashback titled A Story Of Derry.