"The Tomorrow People" aired its fourth episode on The CW, Oct. 30 (#AmellWednesdays), giving fans the much-anticipated backstory between John Young (Luke Mitchell) and Jedikiah Price (Mark Pellegrino).

Spoiler alert: This review contains spoilers from "The Tomorrow People" Season 1, Episode 4: "Kill or Be Killed." Read at your own risk.

Source: YouTube/The CW

John Young was like Robin Hood in his youth, apparently. Dr Jedikiah Price and ULTRA came to his rescue, but it was all part of a plan. John eventually realized everything the dark "Jedi" taught him was directed at eliminating what's "special" about him. He's now passing the lesson to Jedikiah's nephew, Stephen Jameson (Robbie Amell).

Still on "Kill or Be Killed," another "bad guy" with connections to John was introduced: Killian McCrane (Jason Dohring, "Veronica Mars"). Like John, Killian was an ULTRA agent gone rogue. They're both "sons" to Jed. But unlike John, Killian is much darker, madder, and more "explosive." And he really, really wants to kill Jedikiah. John Young was left to decide what's best for him. A huge secret is revealed toward the end.

Mark Pellegrino has made such a strong impression to Sci-Fi/Fantasy viewers as Lucifer himself in "Supernatural." Now Pellegrino is one of the top reasons fans are enjoying The Tomorrow People Season 1. Social media talks about the new CW series is not always about its central character portrayed by Robbie Amell. Pellegrino is stealing the show.

Luke Mitchell is also doing a brilliant job in playing the guy who's not afraid of Lucifer, err, Jedikiah. As John Young, he was not sure whether getting Stephen into the group is a good idea. But as soon as Stephen saved his life, fans knew the two would make a powerful duo. Incidentally, John is the superhuman protégé of Stephen's superleader-but-MIA dad.

Unlike its Sci-Fi contemporary on TV, "Marvel's Agents of S.H.I.E.L.D. (ABC)," The Tomorrow People (The CW) is not letting up. Every week, the young teens with three T abilities (telekinesis, teleportation, telepathy) are diving deeper into more intense action. The 'Agents,' however, is still too scattered to make millions of fans really care.

The Tomorrow People Season 1 and Marvel's Agents of SHIELD are both in its first few episodes. But one has built more excitement than the other. Where 'Agents' is weak, 'Tomorrow' is very strong: character development, humour, snappy lines, and awesome supervillain, among others.

The Tomorrow People airs Wednesdays on The CW. Its lead-in show, "Arrow," stars Robbie's cousin, Stephen Amell. Arrow Season 2 and 'Tomorrow' Season 1 make up the network's much-hyped "AmellWednesdays."

More 'The Tomorrow People Season 1' and TV Guide Features:

'The Tomorrow People' (CW) Review: 2013 'Alphas' and 'Heroes' for Sci-Fi Fans; Robbie Amell After Stephen's Arrow Season 2 [PHOTOS]
Arrow Season 2, Episode 3 Spoilers: Black Canary Uncaged? Stephen Amell Says Oliver Queen Gets 'Blown Up by a Mortar Shell' [PHOTOS, VIDEO]
Arrow Season 2, Episode 2: Stephen Amell Promises 'Identity' is 42-Min Movie; Black Canary, Bronze Tiger in Oliver Queen's Starling City [PHOTOS]