The finger of suspicion
Definition 1 of 1
Pro Tip 1/3Implied Guilt
Indicates suspicion, but not proof, of someone's guilt in a negative situation. 
Despite no evidence, the finger of suspicion at the office always seems to point to John.
Pro Tip 2/3Not Conclusive
Suggests someone could be responsible for wrongdoing, but it's not a final judgment. 
The finger of suspicion whispers her name, yet she maintains her innocence.
Pro Tip 3/3Emotional Weight
Often comes with negative emotional implications for the person it points to. 
After the scandal, the finger of suspicion tarnished his reputation.