Very engaging, very different from what I've been reading lately in literary magazines. Sam is quite real as is the setting and point of view. The ending is indefinite, enigmatic. The robbers had to have spoken with Luke, yes. Did he know about the robbery? Maybe. I want something between that clue and Sam's envisioning the end of his relationship. Some bit of evidence or internal dialogue to support the conclusion.
I loved this short story--it is so beautifully layered and I found it utterly absorbing. This wonderful, tender story is full of sadness and is completely believable.