This episode originally aired on September 10, 2017. As the penultimate episode of the series, it focuses on the internal collapse of the Partnership and the high-stakes interrogation of Dutch Velders and Ephraim Goodweather by the Master's forces. Release Technical Specifications Based on the file naming convention, this release includes:

: Reviewers at The A.V. Club and IGN generally noted the episode's success in building tension for the series finale, specifically praising the intense dialogue between the protagonists and their captors. Where to Watch

: After being captured, Dutch and Eph are held in a high-security facility. The Master uses Sanjay Desai to attempt to break them, leading to a psychological battle of wills. Meanwhile, Fet, Quinlan, and Roman prepare for the final confrontation using the nuclear warhead.

You can find the series for streaming or purchase on major platforms: : Available on Hulu and Disney+.

: Digital versions are available through the Apple TV Store and Amazon Prime Video.

The identifier "The_Strain_4x09_WEBMux_Ita_Eng_Ac3_Earine" refers to a specific digital release of , Season 4, Episode 9, titled " The Traitor ."