- AudiolibroPrince of SpiesAlex Gerlis
- AudiolibroRing of SpiesAlex Gerlis
- AudiolibroSea of SpiesAlex Gerlis
- AudiolibroEnd of SpiesAlex Gerlis
- AudiolibroThe Swiss SpyAlex Gerlis
- AudiolibroThe Miracle of NormandyAlex Gerlis
- AudiolibroAgent in the ShadowsAlex Gerlis
- AudiolibroThe Best of Our SpiesAlex Gerlis
- AudiolibroAgent in PerilAlex Gerlis
- AudiolibroVienna SpiesAlex Gerlis
- AudiolibroThe Berlin SpiesAlex Gerlis
- AudiolibroSeries: Richard PrinceAlex Gerlis
- AudiolibroSeries: Spy MastersAlex Gerlis
- AudiolibroAgent in PerilAlex Gerlis
- AudiolibroSeries: The Wolf PackAlex Gerlis