We're watching it too. It's okay.
James Spader as the uber-competent & slimy master criminal/defector/traitor guy with his quips and sociopathic demeanor is funny, but otherwise the show is a one-trick pony.
The whole sub-plot of "is he or is he not the FBI agent's father" is going to get old too.
I'm predicting Mrs. Dual and I will follow it for a season or two, then get tired of it unless the writers have some really excellent plots they're holding onto.