Is this supposed to imply the story is implausible because the couple wasn't in on the plot and would rat the third guy out? If so, all 3 are suspects and presumably are in on the plot, so this argument falls flat on its face.
>The two other suspects, a married couple who do not have warrants issued in their names, have denied knowing Z. and said that they were on vacation in Bulgaria when the attack took place.
Is this supposed to imply the story is implausible because the couple wasn't in on the plot and would rat the third guy out? If so, all 3 are suspects and presumably are in on the plot, so this argument falls flat on its face.