Thick as Thieves received mostly positive reviews from
music critics. The album's production and sound, most notably lead singer Dougy Mandagi's vocals, were largely praised, with most critics agreeing that the decision to revert to a guitar-centric sound similar to their debut album,
Conditions, improved the quality of the music from
their previous album. Joseph Greer's guitar work and the album's musical composition and
mixing was often highlighted as positives in reviews of
Thick as Thieves. In contrast, however, critics were divided on the album's
lyricism, with tracks such as "Burn" being positively highlighted, but those such as the
pop-centric tracks "Lost" and "
Fall Together" among those being negatively highlighted. Despite approval of the
Conditions-esque sound, criticism was also aimed at the lack of deviation from the band's previous material. The album's most positive review to date came from Cameron Adams, writing for the
Brisbane-based
newspaper The Courier-Mail. Adams approved the band's decision to follow up on the sound of their commercially successful debut album,
Conditions, marking the album as "faithful" in his one-word description of the album. Adams noted "Lost" and "Fall Together" as the album's two potential hits, describing them as "better than 90-per-cent of what's in the charts and on the radio now." While he felt that the album "bit over-thought in parts - like they needed help to do what once came naturally to get the blasted record out", he concluded his review by stating that
Thick as Thieves was "undeniably strong, if lacking risks - this is everything The Temper Trap do very well indeed." Also approving of the reversion to the sound of
Conditions was Jules LeFevre of Australian
music magazine website
FasterLouder, who noted, "at first glance [the album] appears to be an attempt to reclaim the spotlight on the festival stages, but on closer inspection reveals a sturdy core." LeFevre praised Mandagi's
falsetto vocals as the album's strongest element, claiming it to be the band's "edge", on top of the "colossal, anthemic choruses, sky high hooks, [and] guitar lines that push and push and push and explode." LeFevre continued by praising the largely guitar-driven composition of the record, in spite of Lorenzo Sillitto's exit, and commented positively on the "simpler, gritter, more blues and classic rock driven" guitars helmed by Joseph Greer. Contrasting to this, however, is LeFevre's sharp criticism of the album's lyricism, describing them as "cringe-worthy", and disapproving of songs such as "Lost" and "Fall Together", although stating that the lyrics felt "comfortable" in context of the music itself. Matt Collar of the American-based online music guide
AllMusic noted that the departure of Sillitto and Greer's move into the role as lead guitarist had virtually no effect on the band's music. In writing a positive review for
AllMusic, he also praised Mandagi's vocals as a "powerful and emotive" presence on the album, commenting on the "scintillating" combination of his vocals and the album's "thick wave of electric guitars, pulsing synths, and drums", comparing the sound to the music of
Cee Lo Green and
The Killers. Collar additionally described
Thick as Thieves as "a heartfelt love letter to The Temper Trap's fans who have stuck with them since
Conditions." More critical reviews of the album included one from
Craig Mathieson of daily newspaper
The Sydney Morning Herald, who criticised the "stiff" social commentary of "Alive", and noted the album as having "little friction, [leading] to both an emotional vagueness and an anthemic quality that's curiously recessive." Mathieson, however, also praised Mandagi's vocals and commented positively on the band's use of "evocative textures" through the "artfully crafted" album, and otherwise praised the lyricism of "Burn", in particular. Dan Stapleton, writing for the Australian faction of the American-based
music magazine Rolling Stone, was more critical of
Thick as Thieves, describing the songs on the album as "[approximating]
Coldplay at their least inspiring", citing the lyricism of "So Much Sky" and "Lost", in particular. He also noted, "to recapture their simple, early magic, the Temper Trap may need to put their obvious stadium ambitions on hold." Stapleton wasn't wholly critical of the album, though, approving of the more guitar-based sound in comparison to their previous album, and noting the title track and "Tombstone" as the strongest tracks on the record. ==Track listing==