02/24/2012 02:48 am ET Updated Apr 24, 2012

'Grey's Anatomy': Dr. Webber's Wife Adele Realizes She Has Alzheimer's (VIDEO)

It was a tough week for Cristina, as she spent the entire hour growing more and more convinced that Owen was cheating on her with Summer Glau on "Grey's Anatomy" (Thu., 9 p.m. EST on ABC). To keep things mysterious, Glau didn't speak a word during her guest turn, adding fuel to the skulking and spying that Cristina was doing. By the end of the hour, she seemed more convinced than ever, but no definitive answer had been given as to whether or not he was cheating on her, or just treating her rather poorly.

Far more definitive was Adele's self-awareness. Richard had decided that he owed it to his wife to stand by her through sickness as per their wedding vows, no matter how bad they got. But after a kitchen fire led to him getting a pretty serious burn, and then she lashed out with no idea who he was later, he began to realize the enormity of what he was going to do.

But that night, Adele came in and while she had no idea what had happened to his hand, or the dining room, she surprised him by saying, "I have Alzheimer's, don't I?"

She remembered visiting Rose Ridge nursing home earlier that day. At the time she had thought this was her and Richard looking for their first house, but now she knew exactly what it was, and insisted to Richard that that's where she belonged, and where she wanted to be.

Watch "Grey's Anatomy" on Thursdays at 9 p.m. EST on ABC.

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