Welcome to Time: Complete Short Fiction Volume 3 - thirteen short stories, each with an introduction giving context, anecdotes, and a glimpse into the life of Hugo and Nebula Award-winning author Robert J. Sawyer. This is the third and final volume collecting all his short fiction.
Here are science fiction, fantasy, and horror stories from the downside of relativity to the upside of high-school reunions, from a murdering Tyrannosaurus rex to the arrival of a sleeper ship, plus:

[*]A sequel to H.G. Wells's The Time Machine
[*]An astronaut returns to her much older family
[*]The only private detective on Mars
[*]A dinosaur civilization faces the asteroid
[*]And (spoiler alert) those pointy teeth seem suspicious.

Time includes: Just Like Old Times (Aurora Award winner, Arthur Ellis Award winner, Seiun Award (Japan) finalist); Immortality; If I'm Here, Imagine Where They Sent My Luggage; On the Surface; Relativity; Forever; Iterations; The Right's Tough; E-mails from the Future; Identity Theft (Hugo Award finalist, Nebula Award finalist, later incorporated into Rob's novel Red Planet Blues); Biding Time (Aurora Award finalist), Peking Man (Aurora Award winner), and The Shoulders of Giants (Aurora Award finalist).
The other two volumes are Earth: Complete Short Fiction Volume 1 and Space: Complete Short Fiction Volume 2.