Gross warns that an investigating officer with 'the least trace of exaggeration' becomes 'dangerous to humanity'.
This chapter from Hans Gross's seminal 19th-century forensic handbook examines the psychological pitfalls of criminal investigation, focusing on how preconceived theories form unconsciously and why they are the 'most deadly enemy' of accurate inquiry. The author analyzes human tendencies toward exaggeration, false characterization, and the neuropathic temperament shared by artists and effective investigators.

As heard by us

A disciplined warning against letting the first impression harden into fixed opinion.

The piece makes its case with a clean, disciplined warning: preconceived theories can become the investigator's most dangerous blind spot, especially when zeal runs hot.

Read the full review in PlayNext →

Why you'd press play

If you distrust first impressions, this chapter will reward you.

Read the full recommendation in PlayNext →
Listen to the show on