The upcoming episode of "Grimm" will be nothing short of surprises. The next installment titled "Heartbreaker" will bear what NBC described as a "deadly" twist involving the frog prince. What direction the episode will take regarding that, there's no telling. 

Meanwhile, delving into Nick and Hank's business in the episode leads to even more bolts from the blue. The detective duo are called to investigate the murder of a cyclist, which, in turn, leads them to a Wesen with "tragic fatal touch." A Wesen is already something. Using the word fatal to describe it must mean the NYPD police officers are in for some big trouble. 

Elsewhere, Captain Renard and Adalind discover that the Royals are going full-scale in locating their child and they are picking up the pace to end their search. The episode also marks the arrival of another Royal, played by Nico Evers-Swindell. 

Finally, Juliette is slowly accepting the fact that her life is changed forever and that her state as a Hexenbiest may be permanent. This also means letting go of Nick, who has not yet given up on bringing things back to the way they were. 

Juliette has been resisting the change eversince it got to her but in the next episode, she broods over "embracing" her new self even if it's not what she wants. Fighting it does not seem to do her any good. The domestic animal veterinarian is ready to accept her fate, but will Nick do the same? 

"Grimm" season 4 episode 16 titled "Heartbreaker" will air on April 3.