They do it with mirrors
Agatha Christie
Miss Marple (6)
Rogue Protocol: The Murderbot Diaries
Martha Wells
The Murderbot Diaries (3)
The Listerdale Mystery
The River of Silver: Tales From the Daevabad Trilogy
S. A. Chakraborty
Daevabad Trilogy (4)
Babylon's Ashes
James S. A. Corey
The Expanse (6)