This guide is written for the serious frontier market investor, policymaker or academic analyst who is looking to maximise returns, improve policymaking or advance research through superior knowledge. We provide analysis and outlooks for 42 frontier economies along with detailed descriptions of their debt histories and restructuring experiences, and with the main investable instruments in the hard currency sovereign and corporate space in each. We aim to give our clients a convenient reference point to check details on loans and illiquid bonds and include as many frontier markets, illiquid instruments, nonperforming or restructured bonds and loans as possible.