'This Is Us' mystery: How will Randall wind up meeting his mother?
Laurel is Randall's new shrink
Laurel is a fellow patient of Randall's new shrink
Laurel hires a PI to find her son
Randall or Laurel get a "hit" through a 23andMe-type ancestry service
Laurel's granddaughter (by another man) is a student at Beth's dance studio
Laurel will be in the same drug trial as Rebecca. In talking, Rebecca realizes who she is... but then forgets.
None of the above
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