'Criminal Minds' season 11 spoilers: Murder becomes art in episode 5 'The Night Watch'

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This week's episode of "Criminal Minds" season 11 will see the BAU race against the clock to save a baby's life. This is after a part-time street artist and a full-time murderer goes on a killing spree in an attempt to make his graffiti work more distinctive by incorporating the bodies of his victims in it.

"Someone is turning death into a work of art," the spine-tingling promo for the upcoming episode titled "The Night Watch" teases. The clip then cuts to the unsub adding in blood in his art work for the final touch. Scenes of the horrible conditions his victims were left in are then shown.

The murderous street artist now has his eye on his "masterpiece," whose vital element will be the baby he kidnapped. The "Criminal Minds" season 11 promo shows the little one's horrified mother pleading to BAU to save her child and Dr. Tara Lewis assuring her they are going to take the guy down.

Unfortunately, it looks like the unsub likes to toy around and is not in the least bit scared that the police is after him. And so he plays a game with the team and gives them a time limit, which, if the teaser is any indication, they aren't able to beat.

"Time's up," the murderer is heard saying. Other scenes then show him preparing his paraphernalia for his latest magnum opus. Of course, fans trust that the BAU will be there in time to save the kiddo but there's reason to worry, considering Lewis' head won't always be in the game.

The synopsis for the upcoming "Criminal Minds" season 11 episode teases that the psychologist is having trouble juggling her life as an engaged woman and a team member of the BAU. With Lewis dealing a cluttered mind of her own, will she be able to get inside the head of the crafty serial killer?

Find out in "Criminal Minds" season 11 episode 5 "The Night Watch" on Oct. 28 at 9 p.m. ET on CBS.