Fullness of Time is an interesting sci-fi novella.

Mixed reviews — but the plot kept me going.

One family has some kind of genetic / medical disorder allowing them to see briefly into the future.

Hiram Granville, a modern Leonardo, secured more than a thousand patents during his lifetime, often just ahead of others who had already been working on the same ideas.

His son, John, an economics genius, never lost a cent in the stock market—or any other financial deal—and was investigated for insider trading on more than one occasion.

Now Cat, a documentarian; her researcher, Mercy; and Cracker Jack, an electronics whiz, are doing a film about the Granville clan.

What they find as they research the family is madness, suicide, a seemingly total seclusion, and a frightening glimpse about what it means to peer into the future.