This quote from Lisa Gardner's 'Never Tell' reveals an unsettling perspective on a character named Jacob that challenges our usual perceptions of humanity and behaviour. Describing Jacob as somehow less than human suggests that his actions or nature are so inexplicable or malicious that they extend beyond simple human flaws. Yet, the phrase "like a lot of predators, he did a decent impression of one" introduces a fascinating duality. It implies that beneath or beyond his predatory nature, Jacob can mimic normal human behaviour sufficiently to evade suspicion or blend into society.

This reflection triggers a deeper consideration of the masks people wear and the sometimes frightening ability of individuals to conceal their true intentions. It also touches on the broader theme of predator versus prey dynamics, a topic that resonates strongly in both natural and social worlds. The quote challenges readers to think critically about the surface appearances and what lies beneath - question the trustworthiness of appearances and the nature of evil.

In the broader context of a thriller like 'Never Tell', the quote encapsulates suspense and the exploration of dark psychological themes. It invites readers to engage emotionally and intellectually with the complexity of human (and inhuman) characters. Ultimately, it evokes a chilling reminder that danger often wears a familiar face, forcing us to remain vigilant and cautious in our judgments of others.