Here's a recent offering from CTC: Do You Wan to Go to Heaven? which addresses, "So do you mean to say that if I decide to skip Mass on Sunday, and then drop dead on Monday, I will go to Hell?" Which, after various considerations, is affirmed (but not given the typical loopholes and qualifications that many other Roman websites do). The article presents an apologetic against "once saved always saved" etc. and explains to ill-informed Protestants why going to mass is so serious for Roman Catholics that if missed, qualifies as a mortal sin: "When we 'skip Mass' we are deciding that we would rather be elsewhere than in the presence of God the Father, with the angels and saints, in that perfect act of worship which is the presentation of the sacrificial Lamb of God to the Father, in the unity of the Holy Spirit."
Compare this to: Just Why Are Only 20% of Catholics Attending Mass? Here, a priest explains why only a small percentage of Romanists actually go to mass (poor homilies, poor music, poor hospitality). "A Protestant once said: "If you Catholics really believed what the Church teaches about the Mass and the Most Holy Eucharist, your churches would be full and you would see Catholics crawling on their knees to attend Mass!"
Interesting... CTC is busy "calling" wayward Protestants to "communion".... seems to me 80% of their fellow brethren are, according to a Roman paradigm, in danger of hell. Most of us Protestants, according to a Roman paradigm, just don't know Rome is the true church. That is, many Protestants will at least make it to Purgatory due to our ignorance...
This seems to me to be a poor business move for CTC (their goal: "Our aim is to effect reconciliation and reunion between Catholics and Protestants, particularly those of the Reformed tradition").
Ah, look at the time... I don't want to be late for church.