whoever's

Now, sir, mark;— Whoever's here, would fain be private here; Whoever's here, depend on't, tell I can;— Whoever's here, depend on't, tell I will not.

“Unless whoever's doing this is someone your dog knows.” “He doesn't know anyone well enough to be comfortable like that.” “For all you know, whoever's been handling Tucker could've been coming by your house every day when you weren't home, making friends with him, feeding him treats.”