In their first episode of 2026, Peter Buckley & Mark O'Donnell explore the Vatican document Vocation of the Business Leader: A Reflection. Drawing from Pope Benedict XVI's encyclical Caritas in Veritate, this rich guide calls Catholic business professionals to integrate faith and work, avoiding a "divided life" while serving the common good.

In this episode of "On the Mark," the Peter & Mark explore Pope Leo's general audience commentary from August 6, focusing on the theme of preparation. They discuss practical ways to prepare for evangelization at work, emphasizing the need for personal spiritual preparation and the importance of being in a state of grace.

In this episode, Peter and Mark discuss the writings of Pope Leo as an untapped resource within the Catholic Church and encourage listeners to engage with these documents, citing the example of Scott Hahn, who found great spiritual treasures in church documents during his conversion to Catholicism.

In this episode of "On the Mark," the focus is on concluding a three-part series on the virtue of hope. Peter and Mark discuss why Christ is the reason for hope, breaking it down into three main reasons: Christ heals our infirmities, Christ has overcome death, and Christ gives us justice and a destination.

In this episode of "On the Mark," Peter and Mark explore the concept of hope from both a worldly and Christian perspective, highlighting the differences between the two. They discuss how Christians view hope as one of the three theological virtues, alongside faith and charity, with the ultimate hope being in heaven and eternal life through Christ.

In this episode of On The Mark, host Peter Buckley welcomes back Mark O'Donnell to discuss the virtue of hope, a central theme for Pope Francis' declared Jubilee Year in 2025. They explore the theological significance of hope, contrasting it with worldly pursuits like self-sufficiency, wealth, fame, and power, which often lead to despair.

Join Peter and Mark as they discuss how relationships are fundamentally built upon one's relationship with God and how faith impacts professional relationships, promoting companionship and listening in the workplace.

In Episode 20 of On the Mark, Peter Buckley and Mark O'Donnell discuss Enduring Persecution in Lay Evangelization and that living out our vocations, whether in marriage, priesthood, or other endeavors, requires perseverance through difficulties and temptations.

This special anniversary episode of On the Mark delves into the heart of evangelization, particularly in the workplace, exploring how authentic masculinity can help us become more convincing personalities and better evangelizers in and through our work.

In this episode of "On the Mark," hosts Peter Buckley and Mark O'Donnell delve into the importance of prioritizing scripture reading in the Christian life, inspired by a thought-provoking video from mathematician and philosopher Dr. John Lennox. Dr. Lennox challenges listeners to reconsider the time spent on distractions versus seeking a deeper relationship with God through His word, emphasizing that mere moments of scripture reading won't suffice for genuine spiritual growth.