Third-Party Monitoring (TPM) has become an essential monitoring and evaluation tool for many agencies working in hard-to-access-areas. A pioneer TPM practitioner, CMC has provided these services to various clients in the Middle East, South East Asia andAfrica ever since its foundation. TPM describes the practice of contracting third parties to collect and verify monitoring data. In fragile environments, CMC can provide a meaningful contribution to the broader monitoring and evaluation toolbox, as well as increase accountability of donor spending, by offering (1) a mixed methods approach based on Key InformantInterviews (KIIs), household surveys (HHS), Focus Group Discussions (FGDs), direct observation (pictures, GPS data), and social media analysis, (2) high-quality training to enumerators in the field, and (3) research quality assurance. CMC always provides TPM services in collaboration with a network of local experts, including enumerators, dataentry staf and analysts.