Spider-Man 2017 Episode 19 - Spider-Island: Part 1 - Invisible Threat Episode Title:Spider-Island: Part 1 - Invisible Threat.Episode Description:Spider-Man and Miles track down an unidentified villain with Spider Powers who steals Peter's experimental stealth suit and equipment from both Horizon High and Oscorp Academy. To their surprise, Gwen has developed spider powers and has become Spider-Gwen after being exposed to the chemicals from Jackal's altered spiders. With unlikely help from Harry (whom Gwen has convinced to no longer blame Spider-Man for Norman's apparent death), Spider-Man, Miles, and Spider-Gwen must stop the unidentified villain from setting off a weapon at the Statue of Liberty.