All That Glitters Is a Mares Nest

All That Glitters Is a Mares Nest (also known simply as Maresnest) is a live album and concert film by the English rock band Cardiacs. It is their third live album, and was originally recorded in the afternoon in the Salisbury Arts Centre on 30 June 1990 with Napalm Death. It is the only Cardiacs album to feature guitarist Christian Hayes throughout. The album was released on VHS in 1992 and as a live album on 1 June 1995.

Napalm Death were recording their video Live Corruption (1992) at the same venue that evening, and seeing as both Cardiacs and Napalm Death shared the same manager, it was decided they could record two live videos in the same place for the price of one-and-a-half. The CD features two extra tracks ("Two Bites of Cherry" and "All Spectacular") that didn't appear on the video.

All That Glitters Is a Mares Nest is the only Cardiacs album to feature the band as a septet. The lineup of Cardiacs which played this concert did not entirely reflect the live touring band of the time as Sarah Smith had left the band the previous year, but continued to tour with them until 2007. The show was Tim Quy's last performance with Cardiacs.