The band formed in 2002 with Henrik Helenius, Niklas Lindström, Gottfrid Åhman, and Uno Bruniusson.

In Solitude signed a worldwide deal with Metal Blade Records in 2010, as Henrik Palm joined the band, and in November of that year the band began recording their second full-length album, The World, The Flesh, The Devil.

The album, Sister, was released through Metal Blade Records on October 1, 2013, and was produced and mixed by Martin "Konie" Ehrencrona.

The album averaged 78/100 on Metacritic which indicates "Generally favorable reviews," and received many accolades including being named No.

[13] In October 2013 it was confirmed that in Solitude would support Behemoth and Cradle of Filth on their European tour in February 2014.