Slow Horses Season 4 wasted no time in getting fans back into the series' twist-at-every-corner-style action.

This seemingly complicates River’s visit to his grandfather.

He claims Standish has seen both David and River since the supposed murder, which she denies.

Slow Horses River Cartwright

He is seen in the French countryside traipsing about the landscape.

Slow Horsesis now streaming on Apple TV+.

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