By the Pricking of My Thumbs vs The Secret Adversary: Which Should You Read?

Both live on shelves: Tommy Beresford, Tuppence Beresford, Married people, Private investigators, Murder, Mystery

Cover of By the Pricking of My Thumbs

By the Pricking of My Thumbs Agatha Christie · 1968 ★★★★☆ 3.8 191 pages · ≈ 3 h 32 m · Moderate Find on Amazon

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Cover of The Secret Adversary

The Secret Adversary Agatha Christie · 1922 ★★★★☆ 3.9 220 pages · ≈ 4 h 04 m · Challenging Find on Amazon

The verdict

Ratings are close: 3.8 vs 3.9 — either is a safe pick by score.
By the Pricking of My Thumbs is the easier read (Moderate), The Secret Adversary more demanding (Challenging).

Side by side