Question: Who carried out the second spin-off attempt of The Vampire Diaries?
About the article "The Vampire Diaries", section "Spin-off".

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Former president of entertainment at The CW, Dawn Ostroff, mentioned a spin-off idea in 2010 that she said could happen in a few years.
A spin-off was in development for the 2011 fall line-up but, due to Kevin Williamson's commitment to "The Secret Circle", it was put on hold indefinitely.
On January 11, 2013, it was announced that a back-door pilot focused on the Originals, starring Joseph Morgan as Klaus titled "The Originals" would air on 25 April for a potential series pick-up for the 2013–2014 season.
This second spin-off attempt was carried out by Julie Plec with no involvement by Kevin Williamson.
On April 26, 2013, The CW announced that "The Originals" had been ordered to series to premiere in the 2013–14 television season.
"The Originals" premiered on October 3, 2013.
Daniel Gillies as Elijah, Claire Holt as Rebekah and Phoebe Tonkin as Hayley will also continue to play their characters, originally from "The Vampire Diaries", in the new spin-off series.
Plec graduated from Northwestern University in 1994.
She was originally a film major but transferred out of the program halfway through and graduated from an interdepartmental major.
Plec penned another script for Wes Craven, "Cursed", which was released in 2005 and starred Christina Ricci, Jesse Eisenberg, Joshua Jackson, and Shannon Elizabeth.
The film suffered many script and scheduling difficulties during production and ultimately failed to perform at the box office.
Plec developed a new TV series for The CW entitled "The Vampire Diaries", which was adapted from a novel series of the same name by L. J. Smith.
The series follows the life of Elena Gilbert (Nina Dobrev), who falls in love with vampire Stefan Salvatore (Paul Wesley), and soon finds herself caught in a love triangle between Stefan and his older brother, Damon (Ian Somerhalder), while the brothers are also being haunted by the past they've had with Katherine Pierce (also played by Dobrev).
The series also focuses on the lives of Elena's friends and other inhabitants of the fictional town of Mystic Falls, Virginia.
"The Vampire Diaries" premiered on September 10, 2009, and has become a domestic and international hit.
In November 2012, Deadline.com announced that Julie Plec and Greg Berlanti had attained the rights to "The Tomorrow People" and commissioned a pilot written by Phil Klemmer.
This occurred after a similar rights option expired to an aborted attempt two years previously.
It was announced on January 28, 2013 that the revival had received a pilot order from the The CW.
On May 9, 2013 the series was picked up for the 2013–14 season by The CW.
On January 11, 2013, it was announced that a back-door pilot of "The Vampire Diaries" entitled "The Originals" focusing on the Original family of vampires was in the works.
The pilot aired in April 2013 as part of "The Vampire Diaries" fourth season.
It was soon after picked up for series by The CW, which will air its first season in the 2013–14 season.
Joseph Morgan reprises his role as Klaus.
It also stars "The Vampire Diaries" actors Daniel Gillies, Claire Holt and Phoebe Tonkin as well as new cast members.
This second spin-off attempt is carried out by Julie Plec, with no involvement by Kevin Williamson. 
On January 11, 2013, it was announced that a back-door pilot focused on the Originals, starring Joseph Morgan as Klaus titled "The Originals" will air April 25th for a potential series pick-up for the 2013-2014 season.
This second spin-off attempt is carried out by Julie Plec.
There is no involvement by Kevin Williamson.
On February 2013, it was announced that Daniella Pineda was cast as the witch Sophie for episode 4x20 of the CW's hitseries The Vampire Diaries.
This episode serves as a backdoor-pilot for the spin-off series, revolving around "the Originals" and taking place in the French Quarter of New Orleans.
She was a regular cast member for first thirteen episodes of the series.
On February 11, 2013 it was announced that Leah Pipes was cast as the human Camille.
Although there has been talk of a love triangle between Elijah and Klaus with this bartender/college student, there isn't any evidence to support this.
However the character was in a small love triangle for couple episodes, but isn't anymore. 
  "The Vampire Diaries": "Haunted" (2009)  "The Vampire Diaries": "Masquerade" (2010)  "The Vampire Diaries": "Ghost World" (2011)  "The Vampire Diaries": "Monster's Ball" (2013)  
"The Vampire Diaries", a one-hour American supernatural drama, was renewed for a fifth season by The CW on February 11, 2013.
The fifth season premiered on October 3, 2013, followed by the series premiere of the spin-off series "The Originals".