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Wiktionary
checking in

vb. (present participle of check in English)

Wikipedia
Checking In

Checking In is an American sitcom that aired on CBS in April 1981. The series is a spin-off of The Jeffersons, which itself had spun off from All in the Family.

Checking In (American Horror Story)

"Checking In" is the premiere episode of the fifth season of the anthology television series American Horror Story. It aired on October 7, 2015 on the cable network FX. The episode was co-written by creators Ryan Murphy and Brad Falchuk and directed by Murphy.

Usage examples of "checking in".

Tak had vacated the premises until it was over, just checking in every now and then to make sure there was no funny stuff going on.