Sunday Streaming Guide: New Releases on Netflix, Paramount+, HBO Max and More (Sept. 20)

Stop the Endless Scrolling: Your Ultimate Sunday Night Watchlist

Sunday evenings are often plagued by the 'decision paradox'—spending more time browsing through streaming menus than actually watching a show. With major platforms like Netflix, Paramount+, and HBO Max updating their libraries almost daily, keeping track of the latest hits can feel like a full-time job. To help you reclaim your weekend, we've curated a comprehensive guide to the most essential new releases arriving this Sunday, September 20.

The Must-Watch Highlights: Top Picks for Tonight

'Lioness' Season 3 Finale (Paramount+)

The tension reaches a breaking point in the high-stakes world of covert operations. Lioness, the gripping spy thriller starring Zoe Saldaña, concludes its third season tonight. Saldaña returns as CIA operative Joe McNamara, leading a specialized program that infiltrates the inner circles of high-value terror targets using female agents.

This finale is particularly poignant as it is dedicated to the late producer Rajeev Malhotra, a key collaborator in Taylor Sheridan's cinematic universe. While the season began with critical acclaim, audience scores on Rotten Tomatoes have fluctuated recently, making this explosive finale a critical moment for the series to stick the landing.

'Lanterns' Season 3, Episode 6 (HBO)

For fans of the DC Universe, Lanterns continues to redefine the superhero genre by blending cosmic action with a classic buddy-cop comedy dynamic. The series follows the generational clash between veteran Hal Jordan (Kyle Chandler) and rookie John Stewart (Aaron Pierre).

Co-created by Damon Lindelof—the visionary behind the acclaimed Watchmen series—Lanterns transforms a standard murder mystery into a sprawling intergalactic odyssey. If you're looking for a show that balances character-driven humor with epic storytelling, this is the one to binge.

'Youth' Series Premiere (HBO Max)

Adding some much-needed laughter to the lineup is Youth, a new romantic comedy from the brilliant Sharon Horgan (of Bad Sisters and Catastrophe fame). Horgan stars as Alex, a 50-year-old London literary agent and divorcee navigating the complexities of mid-life romance while balancing the demands of caring for aging parents and raising a grown son.

Known for creating 'charmingly messy' characters, Horgan delivers another masterclass in comedic timing. The series premieres with two episodes this Sunday, with new installments arriving weekly through November.

The Full Streaming Schedule: Sunday, Sept 20

If you're looking for something specific, here is the complete breakdown of today's additions across the major services:

Netflix

• Cold as Balls: Kevin Hart's spicy, high-energy riff on the popular Hot Ones format.
• Stop! That! Train! (2026): The latest cinematic addition to the library.

Paramount+

• Lioness: The explosive Season 3 finale.

HBO Max

• Lanterns: Season 3, Episode 6.
• Youth: Two-episode series premiere.
• President Curtis: Season 1, Episode 9 (Available late night ET, streaming fully the next day).
• Teen Titans Go!: Season 9H (via Cartoon Network).

Peacock

• Saturday Night Live UK: Hosted by Jamie Demetriou with a performance by Royal Blood.
• Sunday Night Baseball: The Season 37 finale.
• The Hooters Murders: Deadly Shift: True crime intensity via Oxygen.

Final Verdict: What Should You Choose?

If you crave adrenaline and political intrigue, start with Lioness. For a blend of sci-fi and character growth, Lanterns is your best bet. However, if you want to end your weekend on a light, heartfelt note, Sharon Horgan's Youth is the perfect remedy for the 'Sunday Scaries.'