S03E21: Impetus
Dire circumstance leads Emily to take extreme measures against both the Graysons and those closest to her.
Previous Episode 
Season 1
Pilot
S1E1 / 21 Sep 2011
Trust
S1E2 / 28 Sep 2011
Betrayal
S1E3 / 05 Oct 2011
Duplicity
S1E4 / 12 Oct 2011
Guilt
S1E5 / 19 Oct 2011
Intrigue
S1E6 / 26 Oct 2011
Charade
S1E7 / 02 Nov 2011
Treachery
S1E8 / 16 Nov 2011
Suspicion
S1E9 / 23 Nov 2011
Loyalty
S1E10 / 07 Dec 2011
Duress
S1E11 / 04 Jan 2012
Infamy
S1E12 / 11 Jan 2012
Commitment
S1E13 / 18 Jan 2012
Perception
S1E14 / 08 Feb 2012
Chaos
S1E15 / 15 Feb 2012
Scandal
S1E16 / 29 Feb 2012
Doubt
S1E17 / 18 Apr 2012
Justice
S1E18 / 25 Apr 2012
Absolution
S1E19 / 02 May 2012
Legacy
S1E20 / 09 May 2012
Grief
S1E21 / 16 May 2012
Reckoning
S1E22 / 23 May 2012
Season 2
Destiny
S2E1 / 30 Sep 2012
Resurrection
S2E2 / 07 Oct 2012
Confidence
S2E3 / 14 Oct 2012
Intuition
S2E4 / 21 Oct 2012
Forgiveness
S2E5 / 28 Oct 2012
Illusion
S2E6 / 04 Nov 2012
Penance
S2E7 / 11 Nov 2012
Lineage
S2E8 / 25 Nov 2012
Revelations
S2E9 / 02 Dec 2012
Power
S2E10 / 06 Jan 2013
Sabotage
S2E11 / 13 Jan 2013
Collusion
S2E12 / 20 Jan 2013
Union
S2E13 / 10 Feb 2013
Sacrifice
S2E14 / 17 Feb 2013
Retribution
S2E15 / 10 Mar 2013
Illumination
S2E16 / 17 Mar 2013
Victory
S2E17 / 24 Mar 2013
Masquerade
S2E18 / 31 Mar 2013
Identity
S2E19 / 28 Apr 2013
Engagement
S2E20 / 05 May 2013
Truth (1)
S2E21 / 12 May 2013
Truth (2)
S2E22 / 12 May 2013
Season 3
Fear
S3E1 / 29 Sep 2013
Sin
S3E2 / 06 Oct 2013
Confession
S3E3 / 13 Oct 2013
Mercy
S3E4 / 20 Oct 2013
Control
S3E5 / 27 Oct 2013
Dissolution
S3E6 / 03 Nov 2013
Resurgence
S3E7 / 10 Nov 2013
Secrecy
S3E8 / 17 Nov 2013
Surrender
S3E9 / 08 Dec 2013
Exodus
S3E10 / 15 Dec 2013
Homecoming
S3E11 / 05 Jan 2014
Endurance
S3E12 / 12 Jan 2014
Hatred
S3E13 / 19 Jan 2014
Payback
S3E14 / 09 Mar 2014
Struggle
S3E15 / 16 Mar 2014
Disgrace
S3E16 / 23 Mar 2014
Addicted
S3E17 / 30 Mar 2014
Blood
S3E18 / 06 Apr 2014
Allegiance
S3E19 / 13 Apr 2014
Revolution
S3E20 / 27 Apr 2014
Impetus
S3E21 / 04 May 2014
Execution
S3E22 / 11 May 2014
Season 4
Renaissance
S4E1 / 28 Sep 2014
Disclosure
S4E2 / 05 Oct 2014
Ashes
S4E3 / 12 Oct 2014
Meteor
S4E4 / 19 Oct 2014
Repercussions
S4E5 / 26 Oct 2014
Damage
S4E6 / 02 Nov 2014
Ambush
S4E7 / 09 Nov 2014
Contact
S4E8 / 16 Nov 2014
Intel
S4E9 / 30 Nov 2014
Atonement
S4E10 / 07 Dec 2014
Epitaph
S4E11 / 04 Jan 2015
Madness
S4E12 / 11 Jan 2015
Abduction
S4E13 / 18 Jan 2015
Kindred
S4E14 / 25 Jan 2015
Bait
S4E15 / 08 Mar 2015
Retaliation
S4E16 / 15 Mar 2015
Loss
S4E17 / 22 Mar 2015
Clarity
S4E18 / 29 Mar 2015
Exposure
S4E19 / 12 Apr 2015
Burn
S4E20 / 19 Apr 2015
Aftermath
S4E21 / 26 Apr 2015
Plea
S4E22 / 03 May 2015
Two Graves
S4E23 / 10 May 2015
Emily VanCamp
Emily Thorne
Madeleine Stowe
Victoria Grayson
Nick Wechsler
Jack Porter
Gabriel Mann
Nolan Ross
Karine Vanasse
Margaux LeMarchal
James Tupper
David Clarke
