The killer department vs Things a Killer Would Know: Which Should You Read?

Cover of The killer department The killer department Robert Cullen · 1993 ★★★★☆ 3.8 258 pages · ≈ 4 h 47 m · Moderate Find on Amazon
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Cover of Things a Killer Would Know Things a Killer Would Know Paula Doneman · 2006 278 pages · ≈ 5 h 09 m · Moderate Find on Amazon

The verdict

Side by side

The killer departmentThings a Killer Would KnowDifficultyInfluencePopularityClassic
MurderersSerial murderersSerial murdersTrue CrimeBiography & Memoir