Ruh roh. Looks like more trouble for Nicole Walker Roberts Kiriakis DiMera (Arianne Zucker) once she gets out of the clink. Sources say John Callahan is back on set at Days of Our Lives this week reprising the role of Dr. Baker, the sinister physician who helped Nikki switch Sami (Alison Sweeney) and Mia's (Taylor Sprietler) babies. Look for this stint to be a bit lengthier, according to one mole.
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