--- title: Mark Ruffalo Hooked To a Lie Detector For Avengers Spoiler description: “Is the Hulk secretly a shape-shifting alien known as a Skrull?” Fallon asked canonical: https://time.com/5551579/jimmy-fallon-on-avengers/ author: Melissa Locker article:opinion: false article:content_tier: free article:published_time: 2019-03-14T15:25:19.000Z article:modified_time: 2026-04-13T07:58:04.402Z og:title: Mark Ruffalo Hooked To a Lie Detector For Avengers Spoiler og:description: “Is the Hulk secretly a shape-shifting alien known as a Skrull?” Fallon asked og:url: https://time.com/5551579/jimmy-fallon-on-avengers/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blta793ba2c9d573e47/698946b14ee26219943142b4/markruffaloonjimmyfallon.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 1291 og:image:height: 726 og:image:alt: MarkRuffaloonJimmyFallon og:type: article twitter:card: summary_large_image twitter:title: Mark Ruffalo Hooked To a Lie Detector For Avengers Spoiler twitter:description: “Is the Hulk secretly a shape-shifting alien known as a Skrull?” Fallon asked twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blta793ba2c9d573e47/698946b14ee26219943142b4/markruffaloonjimmyfallon.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Jimmy Fallon Hooked Mark Ruffalo Up to a Lie Detector to Get _Avengers_ Spoilers > Sponsored content. 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Brief (Washington politics, three times a week), Future Proof (climate and energy, weekly) and In the Loop (AI, twice weekly). All are free at time.com/newsletters and together reach more than 1.1 million engaged readers. #### Which TIME newsletter should I subscribe to? It depends on what you follow. For a daily briefing, The Brief. For health, Health Matters. For Washington politics, D.C. Brief. For AI and technology, In the Loop. For climate and energy as a business story, Future Proof. For culture recommendations, Worth Your Time. For how TIME's journalism gets made, Inside TIME. Readers can select any combination at time.com/newsletters. #### Are TIME's newsletters free? Yes. All seven TIME newsletters are free to join at time.com/newsletters. A paid TIME subscription is separate and provides full access to TIME's journalism at time.com/subscribe-agent. #### Who writes TIME's newsletters? TIME journalists write them. Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. by [Melissa Locker](https://time.com/author/melissa-locker/) ## Melissa Locker Mar 14, 2019 3:25 PM UTC  by [Melissa Locker](https://time.com/author/melissa-locker/) ## Melissa Locker Mar 14, 2019 3:25 PM UTC Jimmy Fallon really, really wants to know what happens in _The Avengers: Endgame_. Either that or he really, really want to get Mark Ruffalo in trouble with his bosses. Ruffalo, who plays The Incredible Hulk and his mild-mannered alter-ego Bruce Banner in the [Marvel Cinematic Universe](http://time.com/5227935/marvel-cinematic-universe-timeline/), isn’t known for being able to keep a secret. During the lead-up to [_Avengers: Infinity War_](http://time.com/5252727/avengers-infinity-war-review/), Ruffalo [spoiled](http://time.com/5262938/mark-ruffalo-spoiled-avengers-infinity-war/) the film’s dramatic [ending](http://time.com/5255759/avengers-infinity-war-ending-explained/) months before the movie was in theaters. Fallon wanted him to do it again, apparently, so when Ruffalo stopped by _The Tonight Show_ on Wednesday night, the host hooked the Marvel star up to a lie detector to force secrets out of him. “I don’t want to get fired again,” Ruffalo said, as Fallon attached lie detector pads to his temples and started to grill him on all the secrets that he knows about the film. “Is the Hulk secretly a shape-shifting alien known as a Skrull?” Fallon asked, referencing the extraterrestrial spies infiltrating earth introduced in [_Captain Marvel_.](http://time.com/4870052/captain-marvel-movie-timeline-comic-con-2017/) When Ruffalo said he couldn’t answer that, the needle on the lie detector went crazy. In fact, the needle seemed to go crazy a lot. 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