This study has examined the tenor of discourse and modality in two excerpts from Achebe’s Anthills of the Savannah. The study aims at decoding the writer’s subtly encoded messages through both the interrelationships established among the participants of the selected excerpts and his use of modality. To attain such objectives, the investigation uses the descriptive quantitative and qualitative methodology. The research has arrived at valuable findings. Among several others presented in the subsection entitled interpretation of findings, the study has unveiled that power among the participants of the excerpts is unequal, contact infrequent, and affective involvement low. The tenor or social role relationship played by such participants as Major Sam, Chris Oriko, and Ikem Osodi is a formal one describing a formal situation. This implies that Achebe’s message in these excerpts is a serious one depictive of the real political unrest and the dominantly unmanageable discontent of Nigerians by the time he wrote these texts. The social role relationship carried out by the salespeople and their potential customers depict an informal tenor highlighting Achebe’s claim for a change in the Nigerians’ mind, and indirectly in the Africans’ ways of life. The overriding use of modalization over modulation in the analyzed excerpts highlights the way the writer creates a less authoritative, more suggestive tenor balancing, by this means, the power inequality inherent in the modulation.