The word island derives from Middle English iland, from Old English igland (from ig or ieg, similarly meaning 'island' when used independently, and -land carrying its contemporary meaning; cf. Dutch eiland ("island"), German Eiland ("small island")). However, the spelling of the word was modified in the 15th century because of a false etymology caused by an incorrect association with the etymologically unrelated Old French loanword isle, which itself comes from the Latin word insula. Old English ieg is actually a cognate of Swedish ö and German Aue, and related to Latin aqua (water).
The team learns that Traveler 001 is still alive in the body of his former psychologist, Perrow, when the Faction tries to capture him/her. Perrow dies but they believe 001 had access to a transfer device (since in the future he helped construct one) and as a result they are unsure where his consciousness now resides. Doubts about their loved ones worsen for Kat (suffering hallucinations and suspicions), Jeff (now, not Jeff and trying to make amends) and David, who is concussed.
Following the abrupt breakup of The Unicorns in 2004, members Nicholas Thorburn and Jamie Thompson simultaneously formed Islands and hip-hop group Th' Corn Gangg, and recorded Islands' debut album, Return to the Sea during 2005. The album was recorded at Breakglass Studio and Thompson's bedroom in Montreal, Canada, and was produced by audio engineer/record producer Mark Lawson.
Vincent asks the team to stand down and let him finish what he has been planning. When the team refuses to comply, Vincent holds the lives of Kat, David, Jeffery, Ray, and Grace over them, and forces them to reveal themselves as Travelers to the world. The team must make the choice between breaking protocol and thus risking being overwritten by the Director, or doing what they must to save the ones they've grown to care about since their arrival in the 21st.
The Faction sets off nuclear blasts that destroy all of the Travelers' archives outside the US. David, left for dead by the Faction in the last surviving archive, is the only person who can disarm the nuclear device. He succeeds but is exposed to lethal radiation. Kat's suspicions about MacLaren, temporarily allayed, surge again and she throws him out – for her the marriage is over as she feels he is no longer the man she first met. Jeff tries to escape from interrogation by 001; he is eventually found having been walled up. Marcy hopes the Director will send a Traveler medical team to save David but no help arrives. In the moment before he dies, David conveys a message from the Director: "Protocol Omega."
The Director can invoke three other protocols in special situations: Protocol Alpha temporarily suspends all other protocols when a critical mission must be completed at all costs, Protocol Epsilon can be invoked when Traveler archives are threatened, and Protocol Omega permanently suspends all other protocols when the Director abandons the Travelers because the future has either been fixed or deemed impossible to fix.
The first season of Travelers has a score of 100% on Rotten Tomatoes based on nine reviews with an average rating of 8.0/10. Neil Genzlinger, writing for The New York Times, described the first season as "tasty", and "enjoyable science fiction", with "some attention-grabbing flourishes and fine acting". Hanh Nguyen, writing for IndieWire, describes the series as "fun and freaky," finding the series' appeal "in how the core group of five travelers adjust to life in our present," noting the "human nature in the travelers". Lawrence Devoe, of TheaterByte.com, called the series "tautly paced and suspenseful" with "well-developed characters", declaring that "Brad Wright has a real knack for creating futuristic series". Evan Narcisse, reviewing the first five episodes for io9, appreciated the moral dilemmas offered by the series premise and the awkwardness presented by the characters' interactions with their hosts' friends, colleagues, lovers, or caretakers: "This is a superhero show in double disguise, offering up clever explorations of the secret identity concept that touch on the guilt and contortions that come with living a double life." Netflix announced that the series was one of its "most devoured" series in 2017.
During the summer of 2015, Islands simultaneously recorded two records: Should I Remain Here, At Sea? — a spiritual successor to the band's debut album, Return to the Sea — and Taste, a "more electronic" album "buoyed by drum machines, programming and vintage synths." The albums were released on May 13, 2016 via the band's own Manqué label, reaching #21 and #23 on the Billboard Heatseeker charts, respectively.