Every season of "The Originals" has involved a supernatural being threatening the peaceful existence of the Mikaelson clan. While, they have rested knowing full well that they cannot be killed easily, Season 3 has brought in some ancient and powerful vampires that fully benefit from the death of at least one of the original vampires.

Lucien (Andrew Lees), the first vampire ever to be sired by the Mikaelsons – Klaus (Joseph Morgan) to be precise - was also the first to arrive at New Orleans. He warned Klaus that there is a war between the sire-lines. Following the death of their brothers Kol (Nathaniel Buzolic) and Finn (Caspar Zafer), the vampires at war realised there is an economic way to destroy all of their enemies at one go; kill the original vampire that sired them all.

Now, his mortal enemy and the first man to be sired by Elijah (Daniel Gilies), Tristan (Oliver Ackland) has arrived, confirming the news. Just as Lucien had expressed his desire to protect Klaus, Tristan said he wishes to protect Elijah. The object that could kill an original vampire is with Lucien. Howeve, Tristen could very well be trying to distract Elijah from himself and the object could be with him instead – or with his sister Aurora (Rebecca Breeds), who has escaped her confinement in a monastery as of Episode 3.

One of the two is also a serial murderer. Each of the victims is left with the same mark that Tristen had left on Lucien in 1002 AD. From the looks of it, neither of the newly arrived vampires can be trusted, and it is quite possible that they are at least temporarily working together to take Elijah and Klaus down together. In fact, there are rumours suggesting that their common agenda is to find a way to cut all links with their sires and kill them.

The upcoming episode will also see Marcel (Charles Michael Davis) being propositioned to join The Strix, the most dangerous and influencial congregation of vampires the world has ever known. From the looks of it, Marcel learns that they are bad news, and sticks to working with the Mikaelsons, rather than their enemies. After all, Marcel should know by now, that in the end, Klaus always wins the war.

Watch Season 3 Episode 4 of "The Originals" at 9.00 pm (EST) on The CW on Thursday, 29 October. You can also live stream "A Walk on the Wild Side" via CWTV.