Look for inconsistencies between their words and earlier statements
Notice changes in tone, pace, or speech patterns
Watch for overly vague or overly detailed answers
Pay attention to delayed responses to simple questions
Observe whether they avoid direct eye contact or overcompensate with too much eye contact
Check for nervous behaviors like fidgeting, touching the face, or shifting posture
See if their facial expressions do not match the situation
Notice if they repeat questions before answering
Watch for contradictions in body language and verbal statements
Pay attention to defensive, evasive, or overly rehearsed responses
Look for unusual emphasis on honesty, such as repeated claims of truthfulness
Notice if they quickly change the subject when pressed
Compare their account with facts, timing, and other sources
Watch for signs of stress when specific details are mentioned
Be cautious of assumptions, since none of these signs alone prove lying