The major plot flaw was that the guy gets stabbed by his brother and still he goes to the playground to play with the little girl. He gets a large knife slash on his back and a fatal knife stab. No need to call 911 or a doctor or go home for a band aid. It's quite a stretch to the plot just make the twist come at the end.
In this episode, Alexx gets more air time. She is a good character, even though she calls her corpses, "baby". She helps her friends and stands for what she believes. Her boss seems like a jerk.