Why did Dr. Ramona Nowitzki show up?
That was a key question on The Big Bang Theory Season 10 Episode 24 when Sheldon's friends grew concerned over whether something could be happening between the pair.
It did not help matters that Amy was visiting Princeton, so they were even more worried that something could be going on.
Did Penny decide to let Amy know that Ramona was in town?
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.