Digging for Kryptonite goes through Superman history the way a patient collector goes through a long box: one era at a time, with a knowledgeable guest along for the dig. Anthony Desiato hosts. The format is conversational, the host and a guest, and several of those guests come back for more. That range of voices is the show's real asset. Ed Gross, introduced as a Superman historian, talks about a book in his Krypton Talk series that follows Supergirl from the comics to the new film. Martin Gray, the man behind the Too Dangerous for a Girl review blog, says he writes about her often but rarely gets to talk about her aloud. Bernie Gerstmeyer of All Yeah! Comics reacts to the full 2026 Supergirl trailer, after a friend named Devo covered the earlier teaser with the host. Sean Hendricks, owner of Fat Moose Comics, turns up for a spoiler-flagged crossover review, and the two joke about him finally making the main feed after their earlier episodes together stayed on Patreon. Then there is writer Sterling Gates. He looks back on his Supergirl run and the New Krypton saga, and he is candid about the executives who kept blocking his attempts to bring back Linda Danvers. Continuity detail runs deep. One conversation traces Kara Zor-El's origin from Argo City's survival to a later reintroduction in which kryptonite poisoning accounted for her jumbled memories. Another asks whether the Daring New Adventures version of Linda, read in isolation, would seem like an Earth woman who simply gained powers. Titles such as 'Supergirl in the SILVER AGE — The Girl of Steel BEGINS' and 'Supergirl in the BRONZE AGE — Daring New Adventures & Death in CRISIS' show how the show divides up a character's history, and 'A History of SUPERGIRL ON SCREEN (Supergirl Day Special!)' takes the same approach beyond the page. The verdicts stay honest. A Supergirl film is called slow and small in scale, even as its flying sequences and score are admired. The trailer conversation weighs a two-hour movie against an eight-issue comic that spreads its story over months. And an otherwise glowing crossover review, one that praises the art, still questions Doc Ock's willingness to kill everybody. Digging for Kryptonite is a Flat Squirrel production, and its sister shows include Lighting the Bat Signal, which brings the same fan-journey approach to Batman. It works best as a companion for anyone curious how the Supergirl in the new trailer came to be.