Cassandra Claire's "The Mortal Instruments" book series is now on Freeform, and not everyone is very happy with it.

In fact, IGN notes that while the TV series may have done a better job at "translating" the book into live action compared to the 2013 film "The Mortal Instruments: City of Bones," it did not do very well in everything else.

"Unconvincing performances, a weak script and poor direction from McG all culminate in a pilot that's not likely to win people over," the outlet notes.

The first episode titled "The Mortal Cup," says Den of Geek, did not give the show the proper and sufficient 'umph' to make both die-hard fans and newbies to the world of the Shadowhunters want to watch more of the new series.

With new actors and actresses on their frontline, there is not much to expect from the show, aside from becoming a subject of criticism to those who are well-versed with Clare's debut novel.

Those who plan to read the books or watch the series, and do not wish to get any information ahead, head to the nearest exit, as some mild spoilers are coming.

"The Mortal Instruments" follows the story of Clarissa Fray, or "Clary," who discovers that she is not as 'mundane' as she thought she was.

In the first book, Clary (Katherine McNamara) encounters Shadowhunters, or the race that descended from archangel Raziel, who were following a demon in the guise of a human to a club that apparently caters to the non-human.

There she meets Jace Wayland (Dominic Sherwood), who later becomes her love interest as well as two other Shadowhunters: Isabelle (Emeraude Toubia) and Alec (Matthew Daddario) Lightwood.

The story then proceeds to tell the story of Clary's mother, Jocelyn Fray (Maxim Roy), who is kidnapped by Shadowhunters loyal to Valentine (Alan Van Sprang), the villain of the story.

With so many characters introduced in the first book "City of Bones," Freeform completed a challenging task at making the story as colorful and as cool-looking compared to what fans of the book series imagined.

Unfortunately, the entertainment company did not do very well, even after doing a bit of plot reshuffling.

Like Den of Geek, many are inclined to believe that the first episode may have left some viewers with a single difficult question: "Would it be easier to watch without prior knowledge of the story and digest all details getting thrown at you or would it be better to read the book and judge how it would differ from the TV show?"