Intellect and Cunning

Both Beautrelet and Lupin rely on superior reasoning, deduction, and strategic deception, with the plot driven by puzzles, codes, and psychological manipulation rather than brute force.

Beautrelet's deductive reasoning about the theft and his strategic planning highlight intellectual prowess.

Beautrelet's deduction about the plaster casts and the crypt demonstrates his sharp intellect, while Lupin's elaborate scheme to replace the chapel's art shows his cunning.

Beautrelet's deduction of Lupin's survival and his counter-scheme to protect his father demonstrate intellectual rivalry and strategic cunning.

Beautrelet's methodical tracking of Charel and the mysterious watcher demonstrates his intellectual pursuit, while Lupin's letter shows his cunning in controlling the narrative.