She was still looking at him, an enigmatic smile on her lips now.

His face wore that same enigmatic smile, but he did not speak.

Harry gives me one of his enigmatic smiles, reading my mind.

The woman looked from him to Sara with an enigmatic smile.

The doctor was peering back, an enigmatic smile on her face.

He was staring at her with an enigmatic smile on his face.

Only now was he beginning to understand the nature of her enigmatic smile.

There was nothing on Ann's face but a small, enigmatic smile.

There's a painting in Paris of a woman with an enigmatic smile on her face.

The girls gave him enigmatic smiles, and spoke for the first time in his hearing.