<Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers ( millions ) </Th> </Tr> <Tr> <Th> 14 </Th> <Td> </Td> <Td> `` This Guilty Blood '' </Td> <Td> Matt Hastings </Td> <Td> Michael Reisz </Td> <Td> January 2 , 2017 ( 2017 - 01 - 02 ) </Td> <Td> 267314 - 14 </Td> <Td> 1.19 </Td> </Tr> <Tr> <Td colspan="8"> A still - missing Jace is held captive on Valentine 's ship . Clave representative Victor Aldertree is instated as the new head of the New York Institute and puts it on lockdown . Clary tells a newly awakened Jocelyn that Jace is her son . Aldertree soon declares Jace a criminal ; wanted dead or alive , and Magnus and Alec quarrel over how to retrieve Jace . Valentine tells Jace he experimented on him in - vitro using demon blood . They portal to land , allowing their location to be revealed to the various parties tracking them , including Jocelyn , who attempts to shoot Jace with a crossbow , before he and Valentine escape back to the ship . </Td> </Tr> <Tr> <Th> 15 </Th> <Td> </Td> <Td> `` A Door Into the Dark '' </Td> <Td> Andy Wolk </Td> <Td> Y . Shireen Razack </Td> <Td> January 9 , 2017 ( 2017 - 01 - 09 ) </Td> <Td> 267314 - 15 </Td> <Td> 0.75 </Td> </Tr> <Tr> <Td colspan="8"> Jocelyn defends her attempt on Jace 's life by explaining the effect Valentine 's experiments had on him as a baby . Upset , Clary seeks solace at the Brooklyn Academy of Art where she is kidnapped by Dot and taken to Valentine . With Clary missing , Jocelyn offers her assistance to Isabelle and Alec by providing adamas , a metal that can be used to track Jace using his and Alec 's bond . Meanwhile at Camille 's Indian residence , Simon and Magnus search for the vampire , whom Raphael is being pressured by the Clave to produce , and find some items from Magnus ' past . With Dot 's help , Jace and Clary flee Valentine 's ship , but not before the risky parabatai tracking renders Alec comatose . </Td> </Tr> <Tr> <Th> 16 </Th> <Td> </Td> <Td> `` Parabatai Lost '' </Td> <Td> Gregory Smith </Td> <Td> Peter Binswanger </Td> <Td> January 16 , 2017 ( 2017 - 01 - 16 ) </Td> <Td> 267314 - 16 </Td> <Td> 0.81 </Td> </Tr> <Tr> <Td colspan="8"> Magnus works to stabilize a failing Alec with magic , but only Jace can save him . After escaping from Valentine 's ship , Clary loses Jace and returns to the Institute . Meanwhile , Jace is hunted by werewolves , including a girl named Maia , who believe he has killed one of their own . Isabelle makes a deal with Aldertree in order to find Jace and save Alec 's life . Magnus transports Alec to his loft , where Jace arrives to revive him . As the parabatai reunite , Clave representatives appear and arrest Jace for high treason . </Td> </Tr> <Tr> <Th> 17 </Th> <Td> </Td> <Td> `` Day of Wrath '' </Td> <Td> Joe Lazarov </Td> <Td> Jamie Gorenberg </Td> <Td> January 23 , 2017 ( 2017 - 01 - 23 ) </Td> <Td> 267314 - 17 </Td> <Td> 0.64 </Td> </Tr> <Tr> <Td colspan="8"> Jace is imprisoned in the City of Bones , where he encounters Hodge . Valentine arrives to break him out , but Jace fights back . Valentine kills Hodge and steals the Soul Sword before disappearing . Clary helps Alec and Isabelle search for a powerful demon with the ability to possess others , but it infiltrates the Institute . Meanwhile , Raphael is tortured by Aldertree for Camille 's whereabouts and goes to Magnus for help . With Camille 's grave dirt found at her house in India , an emotionally conflicted Magnus summons his ex-girlfriend and sends her to the Clave . At the Institute , a possessed Alec kills Jocelyn . The demon then inhabits Isabelle but Clary breaks its hold and succeeds in killing it . </Td> </Tr> <Tr> <Th> 18 </Th> <Td> 5 </Td> <Td> `` Dust and Shadows '' </Td> <Td> Salli Richardson - Whitfield </Td> <Td> Zac Hug </Td> <Td> January 30 , 2017 ( 2017 - 01 - 30 ) </Td> <Td> 267314 - 18 </Td> <Td> 0.58 </Td> </Tr> <Tr> <Td colspan="8"> Jace is freed from the City of Bones , but Aldertree , still suspicious of Jace , bans him from the field of duty
when does shadowhunters season 2 episode 17 come out
January 23 , 2017