<Tr> <Td_colspan="6"> The Berserker siblings continue the search for their father and though each failure only spurs Heather's obsession, Dagur is worried the search will lead to her doom . He asks for Hiccup's help in deciphering Oswald's diary, which contains a picture of a massive dragon skull that leads them back to Vanaheim . Meanwhile the twins, Snotlout, and Astrid search for Chicken, who has gone missing, and find she has started a new family with a wild rooster . The search for Oswald doesn't end on a happy a note, with Dagur only finding his remains and a last message to him and Heather, though he continues his father's work by helping the Sentinels defend Vanaheim from the rogue Grim Gnasher dragons, and leaves satisfied that his father passed proud . </Td> </Tr> <Tr> <Th> 105 </Th> <Td> 13 </Td> <Td> "Sins of the Past" </Td> <Td> Greg Rankin </Td> <Td> Art Brown & Douglas Sloan </Td> <Td> August 25, 2017 (2017 - 08 - 25) </Td> </Tr> <Tr> <Td_colspan="6"> Heather and Johann travel to the Northern Markets when the latter finds word of a man who has claimed to have seen Oswald the Agreeable alive . This, however, turns out to be a trap by Krogan and the Hunters, who capture Windshear and demand the gem on Heather's belt, a lens for the Dragon Eye, in exchange for her life . Johann convinces Heather to go through with the trade and though Krogan attempts to double cross her with a fake key, they are saved by Hiccup, the Riders, and Dagur, who finally reveals the truth of Oswald's fate and grants her closure . Meanwhile, Krogan and Viggo obtain the lens, setting the true mastermind behind the Hunters, Johann, one step closer to finding the King of Dragons . </Td> </Tr>

When does dragons race to the edge season 5