secret writing

Some of the spirits took pleasure in making tours de force in cryptology (secret writing).

The monk leaned back in his chair and read the leaves of the secret writing until he had read them to the end.

My shirt was turned over and over and held up to the light to be examined inch by inch for any traces of secret writing.

I felt instinctively that my mandate or commission was to see if they contained any secret writing.

I had been of late studying secret writing so earnestly that there was now a possible secret meaning in everything I read.