Well, we all have our little blind spots. And usually, these blind spots relate to our friends or loved ones. Dr. Cal Lightman (Tim Roth) is an expert at uncovering the truth and decoding the body language of others. But it turns out that he's not so good at this when it comes to his own daughter.

On the season finale of 'Lie to Me' (Mon., 9PM ET on Fox), Lightman arrives home to find his teenager daughter Emily (Hayley McFarland) messing around with a boy upstairs. Cal is outraged, and forces the young man (played by Carter Jenkins) to leave. Emily is pretty upset herself, and says this to her father: "It's just sex, dad!" Which really doesn't improve the situation.

What's the worst thing that you can threaten another person with? Probably it's when you threaten the life of their child. And that's what happens on 'Lie to Me' (Mon., 9PM ET on Fox).

[Spoiler alert.]

Dr. Cal Lightman (Tim Roth) is dealing with the aftermath of a case from the past. Lightman sent a killer to his death for murdering an 8-year-old child. But now, it seems as though the same killer is still on the loose -- which would mean that Cal captured the wrong guy. Did Cal unwittingly prosecute an innocent man?

To make matters worse, it looks like the child-murderer is after Cal's daughter Emily (played by Hayley McFarland). At this point, Dr. Lightman gets a terrifying call over the phone: " ... Do you know where you daughter is?" It might be the worst message that a father could receive.

Teen romances are always a little tricky. But they're especially tricky when one of the parties involved isn't actually a teenager. And it's even worse when one of the parties in question is -- well -- the boss's daughter.

And that's the situation on 'Lie to Me' (Mon., 8PM ET on Fox). Emily Lightman (Hayley McFarland) has something of a crush on Eli Loker (Brendan Hines). Unfortunately, Eli is an adult, and Emily is a teenager.

To make matters worse, Emily suddenly kisses Eli while they're having a conversation about a concert. And to make matters even worse, Eli's boss is Dr. Cal Lightman (Tim Roth), an expert in lies and deceit. When Cal finds out that Eli has kissed his daughter -- Cal punches him. And he punches him right in the stomach (or the groin; it's a little hard to tell). Ouch! Don't mess with the boss's daughter!

(S02E07) "Finally got you thinking like a criminal. Wonders will never cease." - Cal to Gillian

I have to admit, that image of Cal Lightman in a girlie apron still makes me laugh out loud. Lie to Me may have scored a place in our drama category here on TV Squad, but in our household, we laugh all the way through the show. That's partly because my son does a perfect Cal Lightman impression, with his penguin walk and in-your-face look to see whether you're lying or not.

But on to this episode -- the perfect scenario for Lightman and team, in figuring out Max's lineage. I lost track of how many cold cases they solved along the way. Lots.