The Valyrian steel dagger, aka the catspaw dagger from 'Game of Thrones' keeps reappearing in HBO's prequel series 'House of the Dragon'. Here's what it means.

The dagger, with a hilt made from dragon bone, pops up again in the Game of Thrones prequel series House of the Dragon in the possession of King Viserys I Targaryen (Paddy Considine). In episode 4 ...