A week or two ago .. when we saw the shocked look that flashed across Colin's face when he saw Rachel's picture ... my theory was my theory is, is that Rachel is Colin's mother.
Cane overhears Colin telling Lauren that he & Jill are having a great time rummaging through Shep's journals.
Cane asked Colin about the journals but Colin refuses to talk about the journals with Cane. Why you may ask?
Is it because Colin doesn't want Cane to know about the picture of Rachel? My theory is that Colin is the bastard love child of Rachel and Shep meaning Rachel was Colin's mother
If Rachel is Colin's mother Cane would recognize the picture of his grandmother. Yes, I am more convinced than ever that Colin is the son of Rachel & Shep. He definitely knows something about Rachel. If Rachel and Shep are Colin's parents then that means Katherine she was Colin's sister which means Colin is related to Devon because he would be Devon's great-uncle which means Cane and Devon would be cousins.