In 1986 King Klassic Records in America released Bitches Sin’s second album called Invaders. This ten track LP went on to become a NWOBHM classic so much so that back in their own country British label, G.I. Records also release another version of it in 1988. This version was completely rerecorded and had a different cover, and, moreover, had four tracks discarded and three new songs added for a nine track album.  Now here together for the first time are those full two albums put together as a double CD but with another four different unreleased bonus tracks added onto two full colour picture disc CDs making a 23 track 2CD package. This comes together with a 12 page CD booklet featuring both covers, archive photos and press cuttings, full lyrics and sleeve notes hence the secondary title of Ultimate Invaders.

Bitches sin came together in 1980, formed by the Toomey guitarist brothers, Ian and Pete from Cumbria, England. The band quickly came to the attention of Neat records who included them on that year's iconic NWOBHM compilation, Lead Weight .The track “Down The Road” was so well received by rock critics and fans alike Neat went on to release the band's debut 7" Always Ready For Love/ Sign Of the Times also in 1980. Album wise the band had to wait till 1982 when another major label of the NWOBHM released the band's Predator  opus. 

Lineup changes delayed the band's next offering until 1986 but it was well worth the wait as it was their widely regarded classic Invaders album. 

More lineup changes caused inevitable rifts and the band folded soon after only to return in the 1990's as Flashpoint releasing three albums before also this outfit went into permanent hibernation after the interest in Bitches Sin amongst HM fans dictated they resurrect the name and in the noughties and beyond the band have released numerous new studio album and compilations on their own label.