Heffer, at his most inscrutable, was standing beside him.

The attitude to time might tell us what he thinks, but it is the most inscrutable aspect of the novel.

She lit it, exhaled, and leaned back beside me, giving Osborne her most inscrutable look.

In fact, it may be the most inscrutable restaurant I've walked into all year.

He was smiling in his most inscrutable fashion.

Mr. Pataki is the most inscrutable of the three.

It is easy to see why Lendl, once known as the most inscrutable man in tennis, believes he has found a kindred spirit.

Of the great 20th-century composers, Shostakovich may be the most inscrutable.

A light of pure enjoyment lit up Poirot's face, and he smiled in his most inscrutable fashion.

To me that is the most confusing factor in this case, and the most inscrutable one.