Since Tom is the on-point prosecutor in this case, his actions are especially puzzling. Laura and Tom's daughter sees Tom trying to conceal a scarf, takes it, and hangs it out a window. This happens just as the mother of the guy convicted of the murders, now on death row, walks by. She knows what the scarf means, tries to retrieve it, but the daughter pulls it back, apparently without seeing the woman below. She soon lets Tom know that she has the scarf and cleaned it - it had blood stains. It's hard to tell what Tom is thinking - maybe he's relieved? - but hard to say.
So where does this leave us? The mother of the guy on death row knows she saw the scarf, but she apparently doesn't know who put the scarf there. We know that Tom took the scarf from the evidence room, but we don't know why.
Before the episode ends, Tom again intervenes with evidence, again apparently off the record. What is Tom up to?
It's all too easy for time travel stories to get too convoluted to follow. We did learn last night that, as Nico puts it, the needle of fate can be slightly moved by his and Laura's actions. But, other than that, we're still after the third episode in possession of almost none of the facts and none of the principles of time travel governing this story.
But there's still time in this time-travel tale to make at least some of that more clear.