‘Gotham’ Season 4 Episode 21 Stream: How To Watch Online

Gotham season 4 episode 21 airs Thursday at 8:00 PM EST on Fox. The episode is called “A Dark Knight: One Bad Day” and it will run around the usual 42 minutes (-/+ commercials). Currently, Gotham has a 7.9 rating on IMDb. Here is everything you need to know about tonight’s episode, including where and how to watch it online for free, without cable subscription. Also, find out if Gotham is renewed or canceled for a new season.


As Gotham falls into complete anarchy, a team of unlikely heroes step up to save it. Bullock takes the lead at the GCPD and Bruce’s psychological limits are tested as those close to him are put in danger. Tonight’s episode starts in

Gotham S4 episode 21 watch online

Gotham Season 4 Episode 21 Viewing Details

Show: Gotham: Season 4
Episode Name: “A Dark Knight: One Bad Day” (episode 21)
Air Date: May 10, 2018
Air Time: 8:00 PM EST
TV Channel: Fox

How To Watch Gotham Season 4 Episode 21 Online

Episode 21 of ‘Gotham’ airs this Thursday at 8:00 PM on Fox. There are a few ways you can watch tonight’s episode online, phone, tablet and desktop for free and without cable. Here are your options:

FOX Live Website & FOX NOW App

You can watch Gotham season 4 episode 21 online via Fox Live website. You will need your login and password information for your cable provider.

You can also live stream episode 21 of Gotham season 4 on your phone, tablet or mobile device by downloading the FOX NOW App (App Store, Google Play, Windows Store), login with your cable provider info and begin watching.


No cable or satellite login? No problem! Fox is available on DIRECTV. You can live stream episode 21 of Gotham online through DIRECTV NOW. DIRECTV offers a free seven-day trial, so you’ll receive seven days free before your paid membership begins. You will not be charged if you cancel your subscription within this time.

DIRECTV also has an DIRECTV NOW app (App Store, Google Play). You can watch the show for free if you sign up for the seven-day trial and cancel it before the trial period ends.

Sling TV

You can also watch the Gotham through Sling TV. It’s just like a cable or satellite TV service, except it’s delivered over the internet. You can sign up for a free seven-day trial and if you cancel your subscription within seven days, you will not be charged. Once signed up, simply download the app for your computer or mobile device to start watching.

Sling TV also has an Sling app (App store, Google Play). There is also a Sling app for Apple TV, Xbox One, Roku, Chromecast, and Amazon Fire TV – see all devices.

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Gotham A Dark Knight: One Bad Day stream

Gotham images / posters

Gotham poster