too close for comfort
Also, too close to home. Dangerously nearby or accurate, as in That last shot was too close for comfort, or Their attacks on the speaker hit too close to home, and he left in a huff.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.