NY Times Crossword
April 23, 2017
Stephen Edward Anderson

The answers to the clues below will have something in common.

1. Mercury
2. Easily set off, as a temper
3. Discoverer of stars
4. #1 on the Hot Hundred

Answers:

1. Quicksilver
2. Hair trigger
3. Talent scout
4. Chart topper

Silver, Trigger, Scout, and Topper were famous movie horses - ridden by The Lone Ranger, Roy Rogers, Tonto, and Hopalong Cassidy respectively.