Thank You AZGrandma!
So, this individual is not a problem-solver (unreasonable solutions are not effective solutions) and has a tendency to deflect blame (which can easily be seen through his current words and actions).
Not having the capability to solve problems often leads to an individual feeling that he/she has no control over his/her environment or circumstances.
Not being willing to accept your own culpability in the face of difficulties often leads to misplaced anger, and, unfortunately, those closest in proximity are the most likely to be the target of that anger.
These traits are a volatile combination. Purely speculation, but there are a number of reasonable scenarios which could explain this child's disappearance @ the hands of his father on the evening in question.
If Mr. Redwine were shown to be a well-balanced individual who has the propensity toward self-reflection, then I could make a leap of faith and seriously entertain the idea of an abduction by a random perpetrator. But, in cases such as this, there are ALWAYS tells.
LE needs to get MR into the station and grill him hard. I truly don't see how this situation will be resolved any other way.