He was becoming angrier by the second and suddenly suspicious.

He acted like a young man who was suddenly suspicious of what might be going on outside.

Suddenly suspicious, she found her way to the rear of the place.

I said, suddenly suspicious that this trip might be part of a coordinated effort.

Sam grabbed it but his large eyes suddenly got suspicious.

His eyes took on a stare that was suddenly suspicious.

He looked at me quickly, his eyes suddenly suspicious.

He became suddenly suspicious when a telephone call came for the lawyer.

Not only long faces: he thought they were suddenly suspicious and hostile.

She was beautiful, and had a figure a man could dream about, so why had he become suddenly suspicious?