[astro-codes]

Slow Horses contains absolutely none of the complexity of Le Carre. They're in the same genre, but are not comparable.

[tptacek]

The series you really want is The Night Manager.

Obviously, this assumes you've seen the BBC Tinker Tailor with Alec Guinness, the canonical Smiley.

[LgWoodenBadger]

It also stars an actor who played George Smiley in another film.